Left 4 Dead Walkthrough

1. Multiplayer co-operative first-person shooter
2. Four Survivors fight their way through hordes of zombies
3. Campaign has four scenarios: No Mercy, Blood Harvest, Dead Air and Death Toll
4. Each scenario has five parts
5. Available on Xbox 360 and PCSteam: Left 4 Dead
This is a detailed walkthrough for the single-player campaign of Valve's Xbox 360 and PC first-person shooter Left 4 Dead. Due to the dynamic nature of The Director AI system, exact locations of enemies and weapon pickups cannot be shown. However, the general level layout and goals remain consistent through each playthrough.
The Director

Left 4 Dead features a special AI system called The Director, which dynamically generates unique game experiences every time you play through a scenario. The Director dictates where enemies and weapons are placed, so that in one playthrough, players may be attacked by a large group of zombies in one area and find that area completely empty the next. Player location, status, skill and current status are all variables The Director takes into consideration. The Director also controls dynamic lighting and musical cues.Left 4 Dead 411: Left 4 Dead Information
Versus Mode

In addition to single-player campaign and multiplayer co-op, Left 4 Dead also features a competitive versus mode in which four players take the role of Survivors and four others control Infected. The Infected side will play as special bosses like the Smoker, which suffocates enemies with a long proboscis. Additionally, the Infected can see through walls.

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General Tips
1. Keep moving! Find a balance between progressing forward and clearing out enemies. The longer you dawdle, the more opportunities The Director has to send never ending enemies your way.
2. Watch out for your allies. You can hurt your teammates if you accidentally shoot them.
3. Always watch your surroundings for items. Items will be highlighted in blue and the game will often point you in their direction if you are close by.
4. Use your pistol if there are not a lot of enemies to kill and they are spread out. The pistol has unlimited ammo, allowing you to save your more potent weapons for when you need them.
5. Don't forget that you have a melee attack as well. Use it against zombies if they get close. This will have the side effect of pushing enemies further away from you. It is especially useful if you have to reload.
6. Listen to your teammates! They will shout out locations of weapons, equipment, and even enemies. This is especially helpful when a witch is spotted, as you can turn off your flashlight before disturbing it.
7. Keep firing if you are incapacitated! You can still fire your pistol(s) even when knocked down.
8. Listen to the audio cues. Before enemy attacks, The Director will cue up a particular theme that will signal what type of attack you will face.
9. Set traps when you have to defend an area. When you find gas jugs or oxygen/fuel tanks, you can pick them up by using the Use button. Set them down to create a perimeter around where you will make your stand. You will need to do this on higher difficulty levels to survive.
Weapons
1. Pistol - Your standard issue sidearm. It has unlimited ammo, and is effective at mid range with a low density of enemies. Each pistol clip contains 15 bullets. You can dual-wield pistols if you find another. This doubles your clip capacity to 30 bullets. Always pick up a second pistol if you see one, there is no downside to carrying two. Pistol bullets have very poor penetration capabilities. They are not the ideal weapon in close swarm situations. Aim for headshots if you have time.
2. Tip: Always switch to the pistol in low-density zombie situations. It is still effective and will save you ammo in the long run.
3. Pump Action Shotgun - Like one would expect, the pump shotgun is very effective at close range. On lower difficulty levels it also can be used to take out zombies at midrange too. Since the spread of the shells allows for the capability to take out several infected at once, you normally want to wait until there are a bunch of zombies closer in to fire. Watch out for your teammates at close range with this weapon. The spread of the shells also works against you with friendly fire. The maximum number of shells it can hold in a clip is 8. It takes a long time to fully reload, so make sure you make each shot count. It also has a low rate of fire.
4. Note: If you run out of shells in the clip you will only auto reload one shell. If you are able to take the time to fully reload the shotgun during battle, take the opportunity. Use your melee attack to buy you some time.
5. Submachine gun - A fully automatic gun, the submachine gun is good for mowing down crowds at short to mid range. The penetration of the bullets is not very good, only slightly better than the pistol. However, due to the rate of fire, it is much more suited to fending off groups of zombies than the pistol. It can hold up to 50 rounds in a clip, but you will chew through that very quickly. Try to fire in bursts unless you are facing a dense zombie swarm rushing at you.
6. Auto Shotgun - Now we're talking. The auto shotgun is a very powerful gun, good for taking out Tanks and crowds of infected. You can even use it at longer ranges and it will still kill several enemies with one shot. Don't try to hit enemies across long distances, though. It holds 10 shells per clip and reloads slightly faster. However, each shell still has to be reloaded individually. If you have the auto shotgun, you may want to take point as to not risk hitting your teammates. The rate of fire on this gun is very fast, so make sure each shot counts.
7. Hunting Rifle - It's a sniper rifle. Use it at long range to pop off heads of enemies for best results. The hunting rifle's bullets also have a very high penetration capability. If you can manage to funnel a large stream of zombies in a line, you can quickly mow down 5 or so at a time with one shot of the rifle. You can also zoom in to help you aim better. It holds 15 rounds per clip and has about the same rate of fire as the pistol.
8. Assault Rifle - Use it like you would the Submachine gun. It packs a lot more punch and is more accurate at long distances. This gun is amazing at mowing down large groups of zombies rushing you in a funneled corridor. The bullets penetrate deeply and are much more powerful than the submachine gun. The assault rifle holds 50 rounds per clip, but the maximum amount of ammo you can hold is a little less than the submachine gun.
9. Mounted Machinegun - Mounted machineguns are stationary and will only appear in certain chapters. The location of the machinegun is always at the same place. Though it has a very high rate of fire, the machinegun takes a couple of seconds to warm up before it starts spitting out bullets. Once it does, though, it will mow down infected like a hot knife through butter. It has unlimited ammunition, but will overheat if you hold down fire for too long. Check the barrel of the gun to see how red it glows. When it's a strong red, ease up a bit on the gun to let it cool down.
10. Tip: The machinegun has a limited turning radius. Be aware of your surroundings and get off the machinegun if there are no zombies within its range.
11. Molotov Cocktail - Toss it like a grenade. Molotovs are effective at clearing out clusters of enemies. The flames will linger for a bit, creating a wall of fire that damages any infected that walk through it. Watch out for flaming zombies running at you, though, as they can hurt you.
12. Tip: Lighting tough infected on fire, such as Tanks or Witches, is a great way to lower their health. Every second they are on fire they will take heavy damage.
13. Pipe Bomb - Amazing crowd control device. Throw it into a large crowd of zombies and watch them cluster around the shiny object. This is a good item to have when you are being overwhelmed as it actively attracts nearby zombies to it.
14. Note: Special infected will not be attracted to pipe bombs. They will, however, still be damaged by the explosion if they are nearby.
No Mercy
- YouTube: Left 4 Dead Walkthrough 1 - Opening Scene (Time: 4:55)
The Apartments
- YouTube: Left 4 Dead Walkthrough 2 - No Mercy - The Apartments (time: 4:51)
1. You start off on the rooftop of an apartment building. Grab either the pump-action shotgun or the submachine gun and a health pack in front of you. It's really personal preference on which one to take, either weapon will serve you well.
2. Head through the door on the center of the roof and down the stairs.
3. Note: You can also jump down the skylight directly behind the weapons cabinet into the apartment, but doing so leads to a greater risk of being surrounded by zombies as soon as you land.
4. Scattered zombies should be in the kitchen area, kill them and make your way through the living room.
5. As you leave the living room, you may be attacked by your first large contingent of infected. Utilize the strategies outlined in the earlier part of the guide to survive.
6. There should be a doorway directly to your left with some stairs leading down. Head down those stairs.
7. Make your way through the hallway, the kitchen, and the living room of this apartment until you reach a large hole in the middle of the floor. You'll want to jump into it. Be prepared to fight some infected.
8. Loop around the similarly laid out apartment, past the crashed jeep and the darkened hallway until you get outside into the alleyway.
9. Head for the burning car and turn left at the corner. You should see a police car and the main street ahead of you.
10. Note: The Director tends to send a lot of zombies at you somewhere along the main road.
11. Follow the street as it curves to the right and left.
12. Note: You should see an orange car in the middle of the road that the game has noted for you. Don't shoot this car as it will set off an alarm, drawing the horde to you.
13. Duck into the subway station and head down the stairs.
14. Achievement: If you really want the "Back 2 Help" achievement, quickly rush ahead by yourself to the safe room before any of your teammates get there. Go inside and go back out. If one of your teammates isn't incapacitated, shoot him yourself until he or she is. Then revive them and go to the safe house together.
15. Make sure the next room is clear, then go through the safe room door.
16. Once everyone is inside, close the door to end the chapter.
The Subway
- YouTube: Left 4 Dead Walkthrough 3 - No Mercy - The Subway (Time: 8:37)
1. Stock up on ammo and health packs, then open the exit door.
2. There should be some infected here for you to kill on your left and in the hole.
3. Drop down when the hole in front of you is clear. Watch out behind you, as there could be an entire floor here possibly filled with infected.
4. Continue down the stairs past the "Holly Street Station" sign.
5. Tip: If you head down the narrow passageway to the right of the staircase, you may find some pipe bombs or Molotov cocktails as you drop down to the vent below.
6. Go down the escalators to your left and left again through the turnstiles.
7. Achievement: There will almost always be a witch at some point during this level. You can get your "cr0wned," "Witch Hunter," and "Burn the Witch" achievements by replaying this level a couple of times.
8. Note: There may be some items in the ticketing booth
9. Head up the stairs to the left and make a 180 degree turn.
10. You want to go through the tunnel here, with the subway cars on your left side.
11. Go past through the next tunnel. You should see some burning wreckage to your right.
12. If you're lucky, there will be some ammo or items on the table to your left in front of the subway car.
13. Note: More likely than not, there will be an infected attack of some sort in this area.
14. Hang right at the fork and go through the open subway train car.
15. After exiting, immediately look to your left, there should be an open door leading to a staircase up.
16. Take it up and you should be at a garage-like floor. If there are no enemies here, feel free to just run straight across, up the staircase. Otherwise, clear out a path and make sure no one follows you up.
17. You should arrive in a large room with generator-like objects in the middle. The game will tell you to hit the elevator switch at the far end, but hold off on that for now. Clear out this area of infected first.
18. Note: If you are lucky, there may be some weapons or explosives on the counter near the front of the room.
19. If you check out the room to your right, you should see a first aid cabinet and a mounted machine gun. Grab any health that The Director doles out to you and heal up.
20. Flip the elevator switch and get ready to fend off the Horde.
21. Tip: For an easy time, get on the mounted machinegun turret. It has unlimited ammo, but can overheat if you fire too long continuously. Fortunately, it cuts through infected like butter, so you should be able to kill a good portion of the attacking Horde. Keep an eye on your health though, as attackers may come from behind as well.
22. Once the door is open, run through it and up the stairs.
23. You'll end up on the second floor. Make your way around the path and into the room immediately in front of you. If you are lucky, The Director will have some nice weaponry for you to pick up in here.
24. Go through the door market "Exit" and head straight down the hallway. Feel free to ignore the side rooms unless you need pipe bombs. The Director will often scatter some explosive item pickups in the various offices.
25. Watch out for Boomers in these narrow hallways. Always melee them to push them a good distance away before you kill them.
26. Tip: If you are feeling especially adventurous, you can simply break one of the windows in an office and jump out into the street. This will save you the time of walking through the building.
27. Continue down the stairs and straight out the door marked "Exit" into an alleyway.
28. You will be on the main road. Turn right and make your way to the Pawn Shop at the end of the street.
29. Watch out as you try and enter the shop - The Director loves to send the Horde at this point. Get inside the building and try to funnel the zombies through the front entrance.
30. Enter the safe room to end the chapter.
The Sewer
- YouTube: Left 4 Dead Walkthrough 4 - No Mercy - The Sewer (Time: 9:32)
1. Stock up on health and ammo and head out the safe room.
2. You can either go straight ahead into the storage building or you can go left through the alleyway. Going through the building will take you near a garage that tends to have pipe bombs or Molotov cocktails, while taking the alleyway will be the shortest way to get to your next destination.
3. Go through the doorway with the red and white tiled floor and take the first doorway on the left.
4. Clear out any zombies here and open the door outside to the shipping yard.
5. Note: Stay away from the gas station on the right. Any sort of fire will cause it to explode, taking you and any of your teammates down with it. Blow it up first if you want to.
6. The goal here is to all make it to the left on the right side of the yard. Once all of the Survivors are on, call the lift. This will slowly raise you to the roof while also summoning the Horde.
7. The Horde will come at you from all angles. Try to make your way to the second floor storage room across from where the lift takes you. There you can put your backs to the wall and only have to worry about two avenues of attack - the window and the hole.
8. Tip: If you still have a pipe bomb throw it outside to give yourselves some breathing room.
9. After the attack, drop down into the hole and continue forward into another office building. Like before, you can ignore going into the individual offices if you don't need to pick up explosives.
10. Note: You can either smash a window from the second floor and drop down into the warehouse or you can take the stairs down. If there is a Witch blocking one of your paths, use the other one to get down into the warehouse.
11. Make your way through the door on the far left side of the warehouse. You will be in a very narrow hallway that snakes around. Watch out for zombies hiding in the little nook straight across from the door.
12. Follow the hallway around and then down the many flights of stairs.
13. Tip: Check under the staircase for explosives pickups.
14. Enter the large room with septic tanks. Be prepared for any eventuality here, including a Tank ambush.
15. There are two entrances to the sewer down below. The first is more obvious, it's right near the end of the large room with the septic tanks. The other is in a room off to the right side. It has an unmistakable red light. Dropping down the side room may be preferable since it puts you down with only one path for enemies to attack you.
16. Watch out for either a Tank or a stream of zombies to come at you, The Director has a predilection for unleashing that on you.
17. Head straight ahead and turn left at the end. There should be an open room on your right side - go inside. Pick up any health and ammo here and head through the opening marked "No Smoking." You'll be in a very tight walkway, keep following it through until you reach the end. Don't worry about the fork in the path, both ways lead you to the same destination.
18. Turn to your right once you get to the main sewer again and walk forward until you see a ladder to your left marked "To Mercy Hospital."
19. Note: If there is a Witch in the middle of the main path, you'll have to take the side passageway straight ahead and loop around to reach the ladder without disturbing her.
20. Get ready to fend off some infected as you reach the surface. Your goal is to reach the hospital entrance.
21. Note: There tends to be a first aid kit or two in the crashed ambulance outside. Be on the lookout if you are in need of health.
22. The safe room is just to the inside of the hospital as you enter.
The Hospital
- YouTube: Left 4 Dead Walkthrough 5 - No Mercy - The Hospital (Time: 10:20)
1. Open the safe room door and start moving to your right towards the exit sign. Most likely there will be zombies everywhere, so clear them out.
2. Head up the staircase and go through the door on the second floor marked "exit" as well.
3. Note: You can feel free to ignore the side rooms or the other hallway to the right of the first exit door. They all lead to dead ends and more zombies. If you're lucky you'll find some item pickups, but it's not worth the ammo expenditure to get them.
4. The first door on the left will lead you into a large plaza-like room. If you had gone straight down the hallway, you would end up in the same plaza.
5. Head up the stairs and follow the hallway ahead. Eventually, you will see another exit sign leading to the staircase that was blocked before. Take it up to the top level and go right towards the ICU.
6. Note: Again, don't worry about clearing every single room here. If you leap over the barricade to your left after the staircase, you will find a storage area that most likely will contain some pipe bombs or Molotovs for you.
7. Keep moving forward past the reception area and open the door market "elevator."
8. Watch out for zombies busting down doors to either side of you as you walk here.
9. Make a right, towards the ICU section. Keep your guard up, as hospital zombies will leap at you from both sides in this section.
10. Clear out every room of zombies here before you call the elevator lift.
11. This will be a very tough battle, as Zombies will come at you from straight ahead and to the right. If you cleared out all the rooms, this will be a little easier. Make sure you target the Boomers at a distance first, or else things will become quickly unmanageable.
12. Tip: Try to use an Assault Rifle if you can. It's very useful at mowing down zombies in funneled situations.
13. When the elevator arrives, quickly get on and press the button once everyone is in.
14. After an agonizingly long ride, you will end up on an unfinished floor of the hospital.
15. Go straight and to the left. You'll want to take the outer pathway around the floor, with the city skyline to your left.
16. Turn right and walk towards the center of the floor again when the pathway becomes blocked. You should not have to open any doors to reach the safe room.
17. Keep moving inwards until you see the game point you towards the safe room. It should be to the left of where you are heading at this point.
18. Enter it and close the door to end the chapter.
Rooftop Finale
- YouTube: Left 4 Dead Walkthrough 6 - No Mercy - Rooftop Finale (Time: 8:05)
1. Stock up on supplies and go out the door. Head up the stairs into a hallway.
2. Move down the hallway, ignoring the side rooms. Take the very large pathway to the left right before the hallway ends.
3. Smash the grating to the right of the opening and crouch through. Walk around and climb the red ladder to the left up to the next floor.
4. Climb the tall gray ladder to reach the rooftop.
5. Jump down to the landing pad straight ahead and then take the ramp down on the right side.
6. Answer the radio by walking up to the radio and pressing the action button. The news chopper will tell you to prepare and then call him back. Take this opportunity to stock up on ammo and health.
7. Tip: There might be a couple of gas canisters laying around. Pick them up and place them outside the windows to the left and right of the radio room. Make sure there is a clear view of them if you are inside. Zombies will stream in from all sides, so having explosive canisters there will help out when things get unwieldy.
8. Call the chopper in and head up the stairs to the roof where the mounted machine gun is.
9. The news chopper will say "ETA 15 minutes," but don't worry, it's not actually in real time.
10. It's best to make your stand on the roof since it takes longer for zombies to reach you. However, this makes you more vulnerable if a smoker manages to get a hold of someone and drag them back down to the outside. Be on the lookout for smokers and take them out preemptively if you can.
11. If you get on the mounted machine gun, be aware of your back too. Zombies have the nasty ability to sneak behind you and the AI Survivors won't always be there to help you.
12. As time passes, the news chopper will give you an update on its ETA. Keep at it and you should survive.
13. Tip: There's a lot of room around the rooftops to run away from a Tank should you have to face one. Use the staircase and buildings to keep your distance between the Tank and you can take it down without incurring too much damage.
14. When you hear the chopper arrive, quickly run outside and up the ramp to get on. If you stay too long, The Director will throw multiple Tanks and hordes of infected at you.
15. Congratulations, you have finished the "No Mercy" campaign!
16. Achievement: The "Mercy Killer" achievement will unlock if you played through the entire campaign in one sitting.
The Turnpike
- YouTube: Left 4 Dead Walkthrough 7 - Death Toll - Turnpike (Time: 8:31)
1. Get a weapon and a health pack from the trunk of the car in front of you.
2. Walk along the road, killing zombies along the way.
3. Note: Watch out for Smokers hiding in the trees to the left and right of the road. Try to stay near the center of the road if you can.
4. When you get to the fallen bridge, peer down and pick off as many infected as you can from above. Look across the bridge as well.
5. Walk down the ramp on the right side of the bridge near the red light. Go across and limb the ladders directly to the right of the bridge.
6. Continue along the road into the tunnel up ahead. Feel free to ignore the rooms to the sides, they lead to dead ends.
7. Eventually you will reach a small blockade of cars up ahead. Simply jump over them to get past them.
8. As you cross the cars, there may be a zombie attack. If so, double back and use the cars as cover and obstacles to slow down the Horde.
9. Note: Watch the hole in the roof for any Smokers. You want to avoid being pulled over the barricade into the Horde.
10. Past the cars, there will be an actual wall you can't cross. Look to the left for a narrow passageway you can enter.
11. Follow it down some stairs and you'll reach two doors you can go through. Both of them lead into a larger pipe room. If you would like, take the door straight ahead, as there will be a chance to get some items in the small room before the pipe room. If you're lucky, there won't be much Infected resistance in here.
12. Make your way across and up the ramp on the far right corner of the room. You should come up outside again in the forest.
13. Fences will surround you to the right, but fortunately you won't have to go over there. Simply keep moving forward up the hill towards the light.
14. Note: There will be zombies here, but you should be able to clear a path to the safe room without much trouble.
15. The safe room will be to your left on top of the slope.
The Drains
- YouTube: Left 4 Dead Walkthrough 8 - Death Toll - The Drains (Time: 6:28)
1. Pick up supplies and go up the stairs to the safe room door.
2. Clear out any zombies in the next room and make your way to the right side.
3. There will be two pipes you can walk through here - north and east. Both will eventually put you at the same destination
4. Going through the north pipe will have you arrive on the bottom floor of the large room. There are tables here where The Director will often leave new weapons, so we prefer this route.
5. You will most likely encounter some zombies here. Watch out for smokers who will grab you from the top floor.
6. Go straight through the opening at the other end of the large circular room.
7. At the top of the ramp there will be a passageway to the right. Before taking it, check the room next to the dead end for any supplies.
8. Once you reach the next area you may see zombies loitering about the muck on the bottom of the large room. Pull out your pistol and pick them off from afar.
9. If the area is clear, drop down and make your way around and up to the floodgate switch.
10. Note: Be on the lookout for any explosives or supplies as you make your way to the switch.
11. Flip the switch and be ready to fight. Enemies will stream in from the bottom entrances. Stay on the second floor and fire down at them.
12. Tip: If you have them one or two well timed pipe bombs can take out the entire zombie horde.
13. Achievement: This is a good place to get your "Pyrotechnician" achievement if you haven't already. Wait for a good number of zombies to stream out before throwing your pipe bomb. It should unlock shortly after.
14. After the battle, make your way across the top of the newly closed floodgates and into the dark tunnels.
15. The path will split here, but again, they both lead to the same destination.
16. Note: Watch out for Boomers here, they can be very deadly if allowed to vomit on you.
17. Keep moving through the next two rooms and you should see a large ladder with a safe room sign next to it. Climb up it and be ready to fend off any infected that may be up here.
18. Go through the door in the back outside.
19. Note: Feel free to ignore the large, warehouse-like room. It's a dead end.
20. Go around the yard until you reach an open area with cars. This is normally the site of a large battle. Use any Molotovs and pipe bombs to clear out groups.
21. Find the safe room symbol straight ahead and smash open the windows.
22. Walk across the bridge and get inside the safe room to end the chapter.
The Church
- YouTube: Left 4 Dead Walkthrough 9 - Death Toll - The Church (Time: 10:53)
1. Once outside the safe room, you will find yourself in a very open train yard.
2. All sorts of things can happen here, so be prepared to fight.
3. Areas of note include the tall guard tower near the center. The Director likes to place Smokers here - kill them first so they don't pull you up. You can find ammo or items up there sometimes, but if you don't need anything, feel free to ignore it.
4. There will be a small building to the right as you walk straight ahead from the safe room. Duck in here and gather any items you see.
5. Your eventual goal is the two story structure at the far end. Go to the far left side of the building and take the stairs up. Loop back around again and eventually you will be on top of some train cars.
6. Walk across them, over the fence and into the next area.
7. Drop down, turn right, and follow the road down. You should pass a sign that says "Riverside."
8. Past the school bus there is a little guard post hut with a first aid box. Check inside for painkillers or health packs.
9. Continue up the road until you see a house with some cars parked outside.
10. Note: Watch the forest to the left beyond the fence. Smokers will sometimes hide out here.
11. Enter the house and pick up any items or supplies you find. Chances are there will be some zombie ambushes in here as well.
12. Leave through the back door, and you should see an ambulance parked out in the middle of the road. Check inside for any health items before continuing.
13. Look for the safe room symbol to the left. Enter the graveyard and make your way to the house at the end.
14. Tip: 'Search the shed that you see immediately to your left as you enter the yard. If you see any gas canisters or fuel tanks, pick them up and place them near any entrances to the house.
15. Unfortunately there is someone already inside the safe room and he's not very helpful. In fact he will ring his bell, summoning the Horde.
16. This fight will be slightly more difficult, as you will have to deal with Horde coming in from three different angles. If you had set up some fuel tanks, shoot them as soon as you see the zombies stream in. Walls of fire will be created, helping you thin out the zombies.
17. When the attack stops, the safe room door will open, revealing a Boomer. Oops, looks like our friend got his just desserts. Back up away from the room and kill him.
18. Don't worry if you get vomited or exploded on, simply close the door immediately and the chapter will end.
The Town
- YouTube: Left 4 Dead Walkthrough 10 - Death Toll - The Town (1/2) (Time: 8:01) | Part 2
1. Climb the ladder to the next floor and stock up on supplies. If the hunting rifle is available, go ahead and grab it.
2. Before jumping down, you should see a bunch of idling zombies all over the bottom. Take this opportunity to snipe them all with your rifle.
3. Jump down and exit the yard through the opening in the fence.
4. You want to make it through the Quik Buy store and out the back. There tends to be lots of zombies milling about inside.
5. Follow the path outside and turn right. You should see a row of houses to your left and a couple of buses in the middle of the road. Watch out for zombies on top of and to the back of the buses.
6. Turn right into the courtyard and go inside the Florist building.
7. Make a right and then a left back outside to a parking lot.
8. You may encounter streams of zombies here. Watch out on the balcony to the building to your right, as there may be a Smoker up there.
9. Follow the road with the houses on your left.
10. Head to the next parking lot of commercial buildings. Feel free to clear the only open building of zombies, but to progress you have to jump onto the white van and onto the roof.
11. Go through the office building to overlook another area. Take the opportunity to snipe at zombies from the second floor.
12. Grab any supplies that may be on the table in the middle of the street and hit the button to call the forklift.
13. Zombies will come at you from the front and from the behind. Depending on which direction they come from first, mount the machine gun or watch the rooftop of the office building you just came from.
14. Walk up the ramp the forklift created and drop back down once you are on the other side of the blockade.
15. Take care of any zombies here and walk around the bus.
16. Go past the arch and turn left, walking through another arch until you reach a building and an alleyway.
17. Tip: Throwing Molotov cocktails behind you in the alley is a good deterrent for zombies who may be streaming in after you.
18. Turn left and head up the stairs to a room. Break open the window here and cross the planks to the other end. Walk across the rooftops and drop down to the left on the other side of the fence.
19. The safe room is at the end of this alley, however, watch out for any enemies next to it or inside the safe room.
Boathouse Finale
- YouTube: Left 4 Dead Walkthrough 12 - Death Toll - Boathouse Finale (1/2) (Time: 10:31) | Part 2
1. Stock up and head out.
2. Clear the little warehouse of any zombies and open the small door straight ahead, to the left of the white van.
3. You find yourself out on the streets again. There's bound to be a large zombie contingent idling outside, so kill them and make your way to the house slightly to your left.
4. Go through the house into the backyard. The Director may decide to send a zombie ambush at you over the fences in the backyard. If he does, back into the house and funnel the zombies through the doorway, making them easy kills.
5. Check the little shack for any equipment and continue through the park entrance.
6. Walk up the path on the left next to the cliff.
7. Note: You may encounter a zombie ambush from both the cliffs and the forest on your right.
8. The path takes you through a lodge and ends at a boathouse.
9. Clear out the area of any zombies, then stock up on ammunition and health.
10. Answer the radio twice to start the rescue. Again, his ETA is not in real-time.
11. Quickly run up to the second floor where the machine gun is. Again, you'll want to try to stay up here as you make your stand. Make sure you have a teammate next to you before you get on the turret. If things play out right, you will be able to fire your machine gun while you blind spots are covered by your teammate.
12. Tip: Utilize explosives wisely. Your AI teammates won't use them, so toss Molotovs and pipe bombs out into the park as the enemies stream in. If you time your throws right, you'll take out large chunks of zombies with little effort.
13. Note: Another benefit of being on top is that you are safe from Smoker tongues if the wooden railing is intact still. He will still constrict you, but you won't be dragged down into the park.
14. Once the boat arrives, quickly drop down behind the house and head for the small dock a little ways to the left, if the house is on your right. You don't want to wait too long as enemies will quickly become too much for you to handle.
15. Congratulations, you've survived Death Toll!
16. Achievement: The "Toll Collector" achievement will unlock if you played through the entire campaign in one sitting.
The Greenhouse
- YouTube: Left 4 dead walkthrough - The greenhouse (Time: 4:07)
1. Grab a gun and some supplies and walk forward.
2. Leave the door down the stairs closed. Instead, walk up the hill of dirt and stop at the wall to clear out any zombies idling about on the bottom floor.
3. Go through the window onto the rooftop and clear any zombies in this area. Watch out for Smokers hanging out on higher floors in buildings around you.
4. Walk down the plank to the next rooftop. Enter it through the rightmost window and make your way through the kitchen and living room.
5. Take a couple of minutes to shoot any zombies outside from inside the window.
6. Drop down and climb the ladder to the right. Walk forward and drop down again into another apartment building. Head down the stairs and take the first passageway on your right.
7. Shoot any infected from inside the building before dropping down onto the trailer and the street.
8. Walk forward straight into the hotel. The safe room is on your left.
The Crane
- YouTube: Left 4 dead walkthrough - The crane (Time: 7:50)
1. Stock up and head out the door.
2. Clear out any zombies in the garage and crouch by the gate. Zombies should be milling about here, take them out too.
3. Note: You can shoot zombies through the large fence on the left.
4. Go up the big pile of dirt and drop down on the other side of the fence. Jump up the boxes and crates to reach a dangling fire escape ladder.
5. Note: This section is very narrow and has room for only one person. Watch out for friendly fire here. If you see a Boomer, quickly jump back down and take him out from afar, lest he bring the Horde upon you.
6. Enter the building through the bathroom and make your way to the hallway. Go straight down the hall until you reach the end. Feel free to ignore the side rooms, they will contain only zombies.
7. Go up the stairs and through the door on your right. If you are lucky, there will be either weapons or explosives here.
8. Look outside the window and clear out any zombies you may see milling about. Jump out the open window and go inside the fenced off area with the crane. Don't trigger the crane yet though.
9. Tip: There should be a couple of red gas jugs on a box in a corner. You can use these to set traps for the Horde. Pick one up and place it on the ground near where you jumped out the window. Place the other one on the ground to the left of the building up ahead, on where it says "Danger" on the ground.
10. Go pull the crane's lever and quickly jump to the top of the small building near where you dropped the gas jug. You are going to make your stand here. As soon as you see the Horde coming, shoot the gas jugs, creating walls of fire. This will thin out the crowds for you.
11. When the crane has lowered the dumpster with the ladder, climb it and make your way across the rooftops until you reach two open windows on the left.
12. Note: Check the corpses near the red building that you drop down for items. Sometimes The Director leaves some goodies there.
13. Enter the building through either window, they both lead to the same hallway. Go through the entrance of the Merril Law Offices.
14. Walk down the planks to the next office building. Head left and you should see a first aid cabinet. Grab the items in here and also any weapons or ammo that are in the room.
15. Continue on through the door marked "Exit" and down the staircase.
16. You'll see a large room filled with cubicles. If you have to fend off zombies here, jump up onto one of the desks, it will give you a better vantage point.
17. Make your way through the cubicles through another Exit door and down some more stairs.
18. Another floor of cubicles awaits you here. Go through these as well and head down yet another flight of stairs to the ground floor.
19. You'll see two doors marked "Exit" here. The green room straight ahead will take longer to traverse, so just jump out to the street on the left.
20. Note: Watch out for the beige car here. If you set off its alarm, the Horde will come after you.
21. Head towards the Storage store on the left hand side. The safe room is inside to the right.
The Construction Site
- YouTube: Left 4 dead walkthrough - The construction site (Time: 8:34)
1. Stock up and exit.
2. Turn left and make your way through the alleys.
3. Note: Watch your friendly fire here, due to the narrow alleys.
4. Clear out any zombies in the construction area here.
5. You want to make your way inside the larger building to the second floor. There are three ways to do this. First, you can climb the ladder outside the construction yard to reach a landing with a sleeping bag. Usually The Director will put some explosive pickups for you to use here. The second way up is on the outside, by jumping up the spools and climbing a short ladder. Finally, there's a ladder inside the unfinished building that leads up. It doesn't appear to extend all the way up, but you can get to the top.
6. There will be at least three gas jugs up here for you to use to set a trap for the imminent Horde invasion. If you are lucky, there will be weapons here as well.
7. Your goal is to shoot the jug next to the fence on the left side of the area. While the fence is burning down, you will have to fend off the Horde. The best places to make a stand are either on the second floor of the building in the back corner or on the little raised area next to the burning fence on the ground floor. #Place the jugs to create a perimeter around the area you decide to make a stand. Shoot the jug next to the fence to start the event. Then, shoot each of the jugs you have placed once you see the Horde start coming at you.
8. Once the path is clear, quickly run down the alley and turn left to reach the next area.
9. Note: There usually is a pile of ammo at the corner of the alleyway where you turn left.
10. Kill any idling zombies and head straight, through the hole in the "High Voltage" fence.
11. Go through the next hole in a fence as well. When you are through to the other side, turn right and head to a seemingly dead end. There will be an open warehouse to your right. Walk inside and take the first door on your left.
12. Open the first-aid cabinet and take any supplies here. Go through the door immediately to the right of the cabinet and head through the passageway on the left side.
13. Keep moving through until you see the airport. Cross the wreckage until you reach the other side of the street, next to the doors. Turn left and walk forward, with the doors to your right.
14. Note: 'Watch out for the zombies idling near the airport. The Director may use this time to unlash the Horde on you.
15. Walk until you reach Terminal B, then take a left and walk back across into the parking garage.
16. Go forward and turn right, heading through floor A. Take the ramp up to floor B and make your way across this floor as well.
17. Go inside the door at the far end to the left. Follow the path across the sky bridge to reach the safe room on the left hand side.
The Terminal
- YouTube: Left 4 dead walkthrough - The terminal (Time: 8:06)
1. Pick up supplies and head out.
2. You find yourself in a very large airport terminal. Take the time to clear out all the enemies you can from this vantage point. If The Director spawns a Tank down there, you can easily take it out before it gets even remotely close to you.
3. Once you've killed all you can, go back in the safe room and restock on ammo. Then, continue forward into the conference center.
4. Make your way down the long hallways here. If you need explosives, feel free to take detours into any of the conference rooms to look for them. However, be prepared to fight off some zombies.
5. Eventually you'll find yourself back in the large terminal area. You should see some red gas jugs as you exit the conference area. Place one in the middle of the escalator and another on the bottom floor a little away from where you will be standing.
6. Head down the stairs towards the white van and start it. Enemies will stream in from the second floor. Shoot the jugs to create a wall of fire and fend off the rest of the Horde.
7. When the fence is down to the ticketing/check-in area, run down that path.
8. Turn left and duck into the baggage check area. Follow the stopped conveyor belt around and into the back area.
9. You will find a mess of stairs and catwalks here, not to mention zombies.
10. Make your way up and over the stairs until you reach the end, then turn right and head down a final set of stairs through an open doorway into the security checkpoint.
11. Head through the metal detectors and check next to the Atlas statue for any items.
12. Go up the escalator to the right of the duty free and turn left. Walk down the hallway towards Gates B1-B3.
13. Take care of any zombies you encounter and duck into Gate B2 for the safe room.
Runway Finale
- YouTube: Left 4 dead walkthrough - Runway finale (Time: 5:49)
1. Stock up and head out the gate.
2. Turn to the right, jump down and head towards the spotlight. Clear zombies along the way.
3. Note: Don't walk straight off from where the gate ends, or else you will find yourself the victim of a scripted movie scene.
4. Keep moving until you reach a mounted machinegun and a radio. Answer the radio, then stock up on any ammo you might need.
5. Tip: You should see a few fuel tanks lying around the area. Pick several up and place them around your position, creating a perimeter. Fire at these when you need to.
6. When you are ready, flip the fuel switch and get ready to fight.
7. Start the fight away the machinegun until you know which direction the Horde is coming from. If they are coming from behind you, kill them using your equipped weapon. Otherwise, get on and have a blast.
8. If a Tank comes ahead of you, quickly get on the machine gun and deal as much damage to it as possible. When it starts to get close, though, get off and run away.
9. Tip: You can shoot down the concrete blocks a Tank may throw at you.
10. Once the airplane is fully fueled, quickly move to the back of the plane. (the plane is to the right of the machine gun) The tail entrance will slowly lower so you can get on. Unfortunately, a giant horde of zombies will stream in towards the plane's rear as well. You will have to hold them off just a little while longer until you can get on.
11. Once every Survivor is on, you will finish the Dead Air campaign!
12. Achievement: The "Dead Baron" achievement will unlock if you played through the entire campaign in one sitting.
The Woods
- YouTube: Left 4 dead walkthrough - The woods (Time: 3:23)
1. Grab weapons and health from the picnic table to your right.
2. Walk straight down the path into the forest. Keep following the path until you reach a bridge. Don't worry about getting lost, you can't really get off the path.
3. Note: Zombies may come down on you from either side as you walk along the path. Be alert and watch your friendly fire.
4. Cross the bridge and check out the tiny lodge to your left for any equipment. When you are done, continue along the path veering to the right.
5. Note: Watch out for Boomers in the woods. Due to the foliage, it may be hard to gauge how far you are from one. Listen to the audio cues of belching to know if one is near.
6. The path will wind along and eventually curve to the left. You should see a large building off to your left in the distance.
7. The safe room will be at the end of the path, straight ahead.
The Tunnel
- YouTube: Left 4 dead walkthrough - The tunnel (Time: 5:09)
1. Stock up on items and head out the door.
2. Make a right and head towards the doorway marked "exit." Go down the stairs and into the next hallway.
3. Duck into the first room on your left. You will see a couple of windows here. Break them open and enter the gigantic silo.
4. There will invariably be a sizable amount of zombies skulking about in here. Take out as many as you can from up above.
5. Cross the yellow bridge to the other side and keep moving forward until you reach a yellow ramp. Follow that down to the first floor.
6. There will be a door marked "exit" to your right. Head through it and grab any first aid or items you may need before opening the emergency door.
7. Tip: There might be a fuel tank or gas jug in this room. Take it back out to the previous large room and place it where you can shoot at it from the room. Remember to put it a little ways away from the door so you don't hurt yourself or your teammates.
8. Once you open the door, zombie hordes will stream in at you from both ends. Pick one side and keep the horde from overwhelming you.
9. When things are quiet again, go through the opened emergency door and turn right. Head up the stairs and continue along the catwalk until you reach the end. Break open one of the windows and step onto the roof. Kill any zombies you can see from your vantage point.
10. Go back inside and take the stairs down and out the door. Continue along the first tunnel closest to the building and you should reach an opening to the right.
11. Walk through and walk straight ahead up a ramp. Go through the doorway to your left and jump up onto a train car. There might be a cache of new weapons here if you are lucky. Try to take out any enemies you see on the other side of the car.
12. Note: The opening to the left will also lead you to the same tunnel, but the ramp bypasses some enemies.
13. Drop down and walk towards the oil tanker. Climb the ladder to get over it and to the next opening on the left hand side.
14. The safe room is through the opening with the sparks.
The Bridge
- YouTube: Left 4 dead walkthrough - The bridge (Time: 5:31)
1. Take any supplies you need and walk out the door.
2. Turn left and head towards the end of the path. Turn right and go straight towards the red light.
3. Note: You could have turned right outside of the safe room, but that path just loops around again to where the left path takes you.
4. Go in the doorway on the left and make another left at the end of the room. You will be out in the woods again.
5. You should see individual zombies milling about out here. Once there is a clear way, move forward and follow the path around and upwards.
6. Eventually you will reach a building on your left side. Enter it and head down the stairs.
7. Follow the hallways until you reach the train tracks again. Turn left and keep moving forward.
8. You should see a building to your left. Go inside and check for equipment.
9. Once outside again, follow the tracks until you reach a train car that you can decouple. Make sure the area is clear of zombies before you hit the switch.
10. Fend off the Horde and make your way back to the building you passed by earlier. A bridge will have fallen down, allowing you to climb it to a new area.
11. Clear out any zombies here and keep moving past the broken fence.
12. The safe room is in the cabin to your left.
The Train Station
- YouTube: Left 4 dead walkthrough - The train station (Time: 6:46)
1. Take supplies and walk outside.
2. Follow the path until you reach a barn. Feel free to go inside if you would like, or you can walk around the right side of it.
3. You should eventually see a giant "Richardson Atlantic" sign to your right, along with the train tracks. Go to the edge and kill all the enemies you can while up above.
4. Drop down, turn left, and follow the tracks straight ahead. You can feel free to ignore the Richardson Atlantic building if you don't need anything.
5. There will be a smaller building to your right, further down the tracks. Check inside this building for new weapons and equipment.
6. Tip: You can climb the train cars to get a better position on fighting the infected.
7. If you move a little ways further you'll find a roadblock. Head up the hill to the right and enter the basement of the house.
8. You'll want to climb a few sets of stairs until you reach the top floor. Look for a window on the left that leads out to a small roof you can jump down on. Clear out all the zombies you can while upstairs and drop down.
9. Walk down the train tracks on the long bridge.
10. The safe room is in the train car at the end of the bridge.
Farmhouse Finale
- YouTube: Left 4 dead walkthrough - Farmhouse finale (Time: 7:39)
1. Take everything you can and head out the other end of the train car.
2. Follow the train tracks until you reach a dead end with a red train car. Climb the ladder on the side of it to reach the US military evacuation zone.
3. Tip: Keep an eye out for fuel tanks or gas jugs to blow up along the train tracks.
4. Follow the small path until you reach a corn field. Kill any enemies that may be here and drop down.
5. Run forward until you reach a small clearing. Turn right to face the tractor's headlight and walk to the right of it.
6. Note: The corn stalks make it very difficult to see where you are going. Fortunately, the game fences you off so you can't get too lost in this area.
7. Keep running until you reach another clearing. Jump over the fence and head inside the farmhouse where the US army is trying to reach you via radio.
8. Stock up on weapons and equipment in this room before you call in the evacuation truck.
9. Tip: There will be a large fuel tank or two lying around the house. Place them outside the front door, or within viewing distance of wherever you make your stand.
10. The best place to hole up is on the second floor, as it will take longer for the zombie hordes to reach you. As an added bonus, the windows in the master bedroom are initially boarded up, impeding the zombies further.
11. Tip: Try to stay indoors for as long as you can. If you loiter on the rooftop or outside for too long, you run the risk of a Smoker dragging you down into the zombies.
12. Once you hear that the army truck is arriving, quickly jump down to the front entrance of the house. The truck will drive up to the left side of the house if you are facing it. Quickly get to the back of the truck and enter it to be rescued. Watch out, as large mobs of zombies will run at you as you try to do this.
13. Congratulations, you have finished the Blood Harvest campaign!
14. Achievement: The "Grim Reaper" achievement will unlock if you played through the entire campaign in one sitting.

The Director

Versus Mode

Categories

General Tips

Weapons

No Mercy

The Apartments

The Subway

The Sewer

The Hospital

Rooftop Finale

The Turnpike

The Drains

The Church

The Town

Boathouse Finale

The Greenhouse

The Crane

The Construction Site

The Terminal

Runway Finale

The Woods

The Tunnel

The Bridge

The Train Station

Farmhouse Finale