Unlike the previous Fallout 3 downloadable expansion pack, Point Lookout, Mothership Zeta is an entirely linear experience with only three main quests and no sidequests to keep you coming back to outer space. The enemies in Mothership Zeta are pretty tough and it's recommended that you be at a fairly high level, have some of the more powerful weapons and armor equipped, and come packing a large supply of stimpacks before you head towards the crashed alien ship and begin the quest. Once you're on the Mothership, there is no coming back until you complete all three quests.

Part 1 - Jailbreak

1. Once you have the content downloaded, wander around for a while until you get a message saying that an unintelligible and ominous radio message is being broadcast around the wasteland.
2. Upon reading the message, this quest will be added to your quest log. The quest marker will lead you over to the crashed alien ship.
3. Fast travel to the closest location you have to the quest marker and then start heading towards it.
4. Once you get near the downed ship, you'll be interrupted by blue light that will slowly bring you up towards the sky. I bet you know where you're going.

1. After being experimented on, you'll awaken in a cell with a woman named Somah. You'll find out that all of your gear has been taken and will get to watch first hand as a giant claw picks up one of your neighboring prisoners to be used for experimentation.
2. Keep talking with Somah and listen to her plan to get you both out of there. The plan is to get in a fist fight once Somah stops talking.
3. Once the Aliens open the force field door to break things up, turn your attention towards the aliens and use VATS to aid you in punching them out. Once they're down, loot their bodies and pick up the Shock Baton.
4. Two more aliens will rush you once you leave your cell, but they should be easy to bring down with your newly acquired Shock Batons.
5. NOTE: You can unlock the remaining cells if you want, but there isn't much of value to find. You can find a dead Enclave Soldier or kill a Rivet City Security to loot their armor, but you'll be getting all of your own gear back soon enough.
6. Turn east and head to the end of the hallway to find three Alien Captive Recordings. You can add them to your log by activating the control panel.
7. Once you're done here, head west to the other end of the hallway and you'll pass through two archways with a red glow. You'll see these throughout the mothership and passing through them will grant you a small health boost. You can restore up to about 3/4s of your health with them.
8. In the next room after the archways you'll be able to find three more Alien Captive Recordings.
9. After you activate the recordings, open the door to the south and you'll enter a room where a little girl named Sally is being held captive behind a force field.
10. Sally will tell you that you can free her by destroying the device at the southern end of the room.

1. Head over to the main control panel to the south and activate it to bring up three core coolant switches. Activate the three coolant switches and then run away to a safe distance and wait for the device to explode.
2. Once the explosion frees Sally from her cell, talk to her and ask her to show you around the ship.
3. After your conversation, Sally will run off to the previous room and crawl under a small gap next to the western door.
4. Wait a bit and Sally will unlock the door for you, allowing you to proceed to the next room.
5. Talk to Sally for a bit to learn a little more about her and about the plan to reach the top deck of the ship. Once you're done, continue forward and then head into the small room to the left that is guarded by a single alien guard.
6. Take out the guard and then check the containers in this room to find your gear! Re-equip yourself and then hit the switch.
7. Head back outside and proceed down the hallway to the left to reach a door leading to the Steamworks.

Part 2 - The Steamworks

1. If you're looking to avoid a tough fight, don't rush forward just yet. Sally will tell you to hold on because more aliens are coming. Wait behind Sally for a little while and she'll eventually initiate a conversation with you.
2. Sally will tell you that she can sneak past them in the vents and then you can recommend that she blow them up with a grenade once she gets behind them. If you choose to do this, just sit back and wait for the explosion.
3. Once the three aliens are down, continue down the linear path until you reach a long hallway with electronic devices lining the right side. Once again, if you're looking to avoid some tough combat, you can wait for Sally to unlock the door to your left.
4. If you want to charge in guns blazing, you'll have to deal with about three or four aliens with shields all at the same time. I'd advise switching over to the Alien Blaster or whatever your most powerful weapon is whenever you're in this kind of situation where you have to fight more than two shielded aliens at once.
5. If however, you choose to go through the door Sally unlocks, you'll only have to fight a single alien guarding the walkway that connects the two rooms. Once you reach the other room, stay hidden, open the door, and head to the left.
6. Whatever method you choose, open the door at the end and head through to reach another room where two aliens will be waiting for you.
7. TIP: If you snuck past the aliens in the previous room, be extra careful not to move back and gain the aggro of the other aliens as you're battling the two in this room.
8. Once the room is clear, head through the western passage and proceed up the stairs, making sure to take care of the alien at the top.

1. Before you head through the door, wait for a bit for Sally to work a little more of her magic. She'll create an explosion that will distract the aliens in the next room long enough for you to get a couple of sneak attacks on them. Once you hear the explosion, charge into the room and clean up.
2. When the area is clear and you've looted everything of value, jump down to the bottom level and head through the door to the north.
3. Continue along the walkway and you might run into a couple of Alien Workers. They show up as enemies on your radar but pose no threat to you and will actually result in karma loss should you kill them.
4. At the end of the walkway you'll run into your first alien turret. They work the same as normal turrets so if you destroy their targeting chip, you'll put them in a frenzy and have them attack their own kind.
5. Continue into the next room and clear the bottom floor of all alien presence. There should be about three of them, two shielded and one without.
6. Once its clear, head up the stairs and fight your way across the bridges until you reach the north end of the room.
7. Head through the doorway and quickly take out the turret and then the alien that enters the room.
8. Continue north through the health arch and be ready to fight two aliens coming up the stairs from down below. One of them should be unshielded so focus on that one first.
9. When it's clear, head down the stairs and continue into the hallway.
10. Sally will contact you once again just to let you know she's still around. Once you reach the next room, you'll be attacked by three more aliens.
11. Once you take out the three aliens, head into the room where they ambushed you and proceed through the northern doorway.
12. Follow the path up the stairs and kill the next group of aliens. The door to the right here will lead to a storage room where you'll find Sally hiding. You can check the room for a couple of supplies, alien crystals, and most important, alien power cells for your Alien Blaster.
13. Once you're ready, head out of the supply room and start heading east along the walkway.
14. Follow the walkway and destroy the turrets along the way until you finally reach the door leading to the Engineering Core.

Part 3 - The Human Home Base: The Engineering Core

1. Now that you've reached the engineering core, you can relax. There are no enemies in this area so feel free to explore as you please.
2. If you want to proceed in the story though, head up the stairs and proceed through the doorway to the right to reach a large room with another stairway leading to the top floor.
3. TIP: Check the tables and shelves down here for a bunch of alien crystals. You can sell these once you get back to the wasteland for lots of caps.
4. Head up the stairs to the top floor and head northeast to where Sally is. She'll tell you that they powered down the teleporter that would have taken you straight to the bridge, but she knows another way to get there.
5. Follow Sally over to the cryo room and she'll initiate another conversation with you. It seems the only way to get to the top of the ship now is to go through space, and in order to do that, you're going to need a spacesuit.
6. Once you finish your conversation with Sally, the quest will be complete.

Part 1 - The Hangar

1. Before you do anything, make sure to check the control panels next to each of the pods for four more Alien Captive Recordings.
2. Now activate the stasis control switch in the middle to open up the freezing pods. The furthest pod on the right holds the astronaut who unfortunately didn't survive the freezing process. Loot his Spacesuit to obtain what you came for.
3. Speak with Sally once you have your spacesuit and she'll explain the plan. You'll need to destroy the generators in the Hangar, the Robot Assembly Area, and the Cryo Lab. Once they're down, you'll be able to proceed through the door that leads to space and make your way to the top half of the ship.
4. NOTE: You can tackle these locations in any order, but I chose the hangar first because it's the fastest and smallest location.
5. Once you're finished with Sally, you can take some time to converse with the surviving humans and get to know each of them.
6. TIP: You can actually kill the Samurai without suffering a karmic penalty or having anyone getting hostile towards you. Once he's dead you can loot his Samurai Armor.
7. When you're through conversing, talk to Paulson one more time and ask him if he's willing to lend a hand in the hangar.
8. The hangar can be found through the eastern door in the main hub of the Engineering Core.
9. Once inside, head through the hallway and proceed down the stairs to reach the actual hangar itself.
10. To the left is a Alien Space Craft with several towers surrounding it. These will be important later. For now, jump down to where the space craft is and start heading southwards towards the stairs.
11. Aliens will be waiting for you at the top so be prepared to take them out.
12. Once the aliens are dead, head to the west side and activate the switch to turn off the force field blocking off the door.
13. Proceed through the doorway and follow the path up the stairs until it empties out into a large room with two drones in stasis.
14. Kill the alien guarding this room and then turn around to face the western wall. Inside the room that is closed off by the forcefield is the first generator you need to destroy. Hit the nearby switch which will trigger an alarm instead of turning off the forcefield.
15. Head over the east side of this room now and position yourself next to the various switches. Activating one of the switches will cause the towers surrounding the spaceship to emit a shockwave that will knock down anything nearby.
16. What you need to do here is wait for the aliens to start rushing out and use the towers to prevent them from making their way up to your level. Just keep mashing the switches and knocking everything over that comes near the towers.
17. Keep this up for a couple of minutes and be careful to take note of any aliens that make it up to the top level so you don't get attacked from behind.
18. NOTE: Try your best to keep Paulson alive, but don't feel too bad if he dies. He's not needed much after this and when he dies you can loot his special revolver from him.

1. Eventually the forcefield behind you will go down and you'll be able to head inside.
2. Once inside the generator room, use the same process that you used to free Sally from her cell. Activate the main switch to bring up the three coolant switches, activate the coolant switches, then evacuate the area and wait for the explosion.
3. Once the generator is down, you don't have anymore reason to stay here. Backtrack back to the entrance and return to the Engineering Core.

Part 2 - The Robot Assembly

1. Now that you're back at your home base so to speak, you can dismiss Paulson by talking to him and telling him to remain here.
2. Find Somah and ask for her help in the Robot Assembly. With her as your follower, make haste towards the western door of the Engineering Core hub.
3. Once inside the Assembly, proceed forward, check the tables for Alien Crystals, and then jump down to the bottom level.
4. Clear out all of the enemies down here and wait for Somah to teleport over to the other side. Once the area is clear, she'll start a conversation with you saying that she'll work on stopping more enemies from coming, while you look for the generator.
5. With that in mind, head to the northern most doorway and head through to a large room with a conveyor belt used to transport drones.
6. Kill the Guardian Drones up ahead and don't forget about the turret up top.
7. Once the area is clear of drones and turrets, you can head through the teleporter in one of the small rooms to meet up with Somah again. She'll tell you that you need to find another way around the assembly because the aliens have shut down the teleporters.

1. Once you're finished with Somah, search around for some crystals up top, and then jump back down to the bottom level.
2. Head to the north end of the room and look to your right to find the big machine that the conveyor belts are coming out of.
3. On the side of this machine is a terminal that you can overload and explode. Make sure to run away as soon as you overload it.
4. Blowing up this machine will open up a hole that will lead to a new section of the Assembly that is heavily guarded by Aliens and robots. Don't wander too far out into the open or you'll get blasted from all angles. Go out a bit to gain some aggro, then head back into your tunnel.
5. Once you've taken down a good number of enemies, head on out and clean up the rest.
6. When the area is clear, head to the southeast corner of the room and proceed through the doorway to reach the generator room.
7. Start up the process of destroying the generator and then head into the doorway underneath the steps.
8. Check the various rooms here for plenty of alien crystals. Once you hear the explosion, head into the western room and use the teleporter to return to an earlier part of the Robot Assembly.
9. From there its just a quick backtrack to get back to the Engineering Core.

Part 3 - The Cryo Lab

1. Now that you're back at the Engineering Core and destroyed the second generator, it's time to say good-bye to Somah. Talk to her and tell her to wait here.
2. Track down the medic Elliott and get him to follow you for your trip to the Cryo Lab.
3. Once you're all set, head south back into the room where you unfroze everyone and head through the door leading to the Cryo Lab.
4. As soon as you enter the lab, an alien will be waiting on the other side of the next door so be prepared.
5. Proceed through the door to the west and you'll wind up in a room with a bunch of Alien Workers and inactive robots.
6. TIP: I don't know if there is a science requirement for this, but I was able to press A on the inactive robots and could choose to re-align their sensors and then reactivate them. If you're not able to do this, it's probably because your science skill is too low.
7. NOTE: You can activate the two switches in this room to open the cryo pods and release into the wild a couple of raiders and ghouls, including a Feral Ghoul Reaver. If you want the extra experience and don't mind taking down a Reaver, be my guest and release the hounds so to speak.
8. Aliens from the two rooms on both sides will eventually flood inside to try and eliminate the intruders, so have your weapons ready.
9. Before you leave and move on, check the southern room and head to the southwestern corner to find another Alien Captive Recording.
10. Now head through the western doorway and proceed through the tunnel until you reach another large area with a bunch of cryo pods.
11. NOTE: Once again, you have the option of releasing ghouls and raiders into the wild by heading into the room to the left and activating the switch.
12. This area is heavily guarded by lots of aliens so if you need to take cover, open up the room to the left and wait for a little to recover health and AP. Don't forget about the turret to the left of the spot where you enter either.
13. Once the area is clear, head for the doorway to the north and continue down the hallway until you reach a door.
14. Head through the door and then wait for a scene to start with Elliott, who finds his squad being experimented on by the aliens.
15. After Elliott gets his revenge, head inside and loot whatever you can from the remains.
16. Before heading into the next room, activate the two control panels next to the door for two more Alien Captive Recordings
17. Once you move on to the next room, Elliott will recognize two more members of his squad inside cryo pods. Don't hit the release button just yet.
18. Elliott will go through the tough moral dilemma of whether he should leave them behind to sleep peacefully, or wake them up and risk them feeling the effects of whatever it was the aliens did to them. You can help talk him through his dilemma and eventually push him towards one direction.
19. Whatever choice you make, eventually you'll need to head through the next door leading to Cryo Storage.

1. Scan this next room for some containers to pick up whatever supplies you may need. Once ready, head through either the east or western doorways.
2. Aliens will be waiting for you in pretty much every corner of this area, so just be on your guard and make careful watch of your compass for enemies.
3. NOTE: You can use the switches on the top level to unleash a total of four Super Mutant Behemoths into the level if you feel so inclined.
4. When the area is clear, head to the bottom floor of the east side and proceed through the doorway along the northern wall.
5. Follow the hallway and you'll eventually reach the generator. You know what to do from here. Bring up the three coolants, activate them, back away, and wait for explosion.
6. Once you hear the explosion, return to the generator room and activate the switch opposite the generator to turn on a portal that will bring you back to the entrance of the cryo lab.
7. From there its an easy backtrack to the Engineer Core.

Part 4 - Space Walk

1. Now that you've destroyed all three generators, follow your quest marker to find and talk to Sally.
2. Sally will tell you that now you have to put on your Spacesuit and head into the decompression room so that you can reach the airlock leading to outer space.
3. With that in mind, head through the door leading to the Decompression Chamber and make sure that your Spacesuit is on.
4. Once inside, make one final check that your Spacesuit is equipped, and then activate the switch to start the decompression process.
5. When the alarm stops ringing, you'll be able to head through the door and proceed down the linear hallways with nothing but dead aliens to stand in your way.
6. Eventually you'll come to a door that leads to Space Walk, which will take you into outer space.
7. You'll have to put your weapon away once you're in space, but don't worry, there are no enemies to fight here. The ones that show up on your compass are just aliens running around down below.
8. Your objective here in the Space Walk is to find three exposed panels and activate them. The first is just to the left of the circle in the middle, the second is southeast of the first panel, and the third can be found by walking around the top of the ship clockwise from the second panel.
9. Once all three panels have been activated, head to the glowing circle in the middle and get beamed up to the second half of the ship.
10. When you're safely inside the ship, the quest will be completed.

Part 1 - The Weapons Lab

1. Head forward and press the switch to start the decompression process. You can take off your Spacesuit and put your regular armor back on once the door opens to the next room.
2. Proceed through the door and press the switch next to the teleporter to allow the rest of the human survivors to join you.
3. While they're teleporting in, feel free to scan the area for containers and supplies.
4. Once everyone has arrived and Sally has opened the door, head on through and take some time to admire the view below.
5. While Sally works on the next door, a hologram will start playing a message from the Alien leader. He doesn't sound all too pleased with what you've been doing so far. Be sure to check the window below to see just how serious he is.
6. That death ray that was just fired is your next objective. Sally should have the door open by now, so go on through and keep heading towards your quest marker until you're stopped by Sally.
7. Sally will tell you that the teleporter is down and that you need to find the other end of the teleporter and turn it back on.
8. With that in mind, head through the door leading to the weapons lab.
9. Take a couple steps out into the open and look to the left to find two turrets on the ceiling and an alien sniping you from a platform.
10. Kill the turrets and then either kill the sniper alien or just make a dash for the southwestern doorway. You'll run into that alien soon enough.
11. Enter the door to your right to find a bunch of ammo for your alien blaster along with the Alien Pulverizer, which is a unique version of the Alien Atomizer.
12. Collect whatever else you may want or need from this room and then return to the corridor and head right once you reach the intersection.
13. Continue following the beaten path and clear out all of the aliens along the way until you reach the sniper perch where the alien was shooting at you before.
14. To the left is a healing arch that you can use to heal yourself without having to waste stimpacks or biogel.
15. More enemies are likely to attack from the northeast where you came from and the southeast, which is where you need to go. Stick around to fight them off or just head for the door on the bottom level to the southeast right away.

1. After you kill all of the aliens in this next room, head east and climb the stairs up to the walkway and then follow it over to the door to the south. Be sure to check all of the containers along the way.
2. The next area is a very large room where you'll find tons of ammo and weapons along the southern wall, including a ton of ammo for your Alien Blaster.
3. After you clear the room of enemies and raid the south wall for weapons, armor, ammo, and supplies, head towards the west wall and press the right most switch to deactivate the forcefield blocking the door.
4. Head inside and destroy one of the Experimental Weapons Drones to pick up the unique Drone Cannon Ex-B.
5. Now head back to the previous room, head around to where the enemies were, and proceed through the northern door.
6. Follow the path north all the way to the end where you'll find a healing arc and a switch to the right. Heal yourself up and then press the switch.
7. The switch will cause all kinds of wasteland enemies to be teleported on to the ship. Switch to an alien weapon and kill everything that appears until you get the Xenotech Expert Perk, which will increase the effectiveness of your alien weapons.
8. Once you have the perk, turn to the right and start heading back. Before you leave, make sure you pick up the Destablizer from the desk on the southern wall.
9. Head back into the previous room and turn to the left to find a doorway along the east wall. Follow the hallway up the stairs and you'll come to a door that leads to the Experimentation Lab.

Part 2 - The Experimentation Lab

1. Open the door in front of you to enter the experimentation lab. You'll find lots of workers here so your compass won't be very reliable with letting you know where actual threats are coming from.
2. Head through the doors to the right to enter a large two part room with a bunch of aliens and alien workers.
3. Clear the room of the hostile aliens and then head through the door to the west.
4. Proceed down the hallway and check the various rooms on the sides if you wish. They don't have much in them outside of a few crystals, epoxies, and biogels. The last one on the left contains a healing archway.
5. Head through the last door on the right to enter another large room where you can view a bunch of aliens through a window.
6. Along the north wall you'll find another Alien Captive Recording to add to your collection.
7. In the middle of this room is a switch that will bring up another generator. Destroy the generator through the usual means and then head through the now unblocked western doorway.
8. You'll find that destroying the generator in the previous room unleashed a new type of enemy called Abominations. Despite packing a pretty big punch once they get close to you, they're actually much easier to bring down than normal shielded aliens.
9. After killing the Abominations, head into the room to the left where they came from to find another Alien Captive Recording in the middle of the room.
10. Turn around now and follow your quest marker to the door leading to the Biological Research facility.

Part 3 - Biological Research and the Death Ray

1. The door to the right contains a couple of Alien Epoxies, but your destination is through the door straight ahead.
2. Several Abominations roam the top floor of this area along with aliens that are likely to join the battle once they hear guns blazing. Note that Abominations and Aliens aren't exactly friends so feel free to let them battle it out whenever the chance arises.
3. Once the area is clear, check out the northwestern part of the room for a Alien Captive Recording and several crystals and epoxies on the desks along the walls.
4. When you're done here, head across the bridge to the south and press the switch at the corner to remove the forcefield blocking the doorway.
5. Head through the doorway and proceed along the walkway to reach a teleporter on the top floor that will take you to the Death Ray Hub.
6. Check both the northwest and southwest corners of this room for drones that can be re-aligned and activated to fight on your side.
7. Once ready, head through the doorway along the south wall and proceed down the corridor.
8. The room to your left holds two containers and several biogels. It's also a nice place to wait for the aliens to pass by and get distracted by those two drones you activated.
9. When the aliens are dead, proceed through the corridor until it empties out into another room where you'll find a doorway to the left.
10. Head through the doorway and walk under the healing archway to restore some health.
11. Start running towards the eastern part of the room and get ready for Aliens to start coming up the stairs. There is also a turret hanging overhead on the ceiling near the stairs. Try to frenzy it first so that it shoots the aliens as well.

1. When its clear, head down and into the doorway on the bottom floor. Follow the short tunnel into the next room and then make a right over to the switch that controls the forcefields blocking the two doors.
2. Hit the switch and then head through the doorway. Follow the long tunnel until you reach a staircase to your right with a couple of aliens waiting for you at the bottom.
3. Enter the door on the left for a healing archway, then return to the corridor and continue following it until you reach a door that leads to the Death Ray Control Room.
4. Head down the stairs and make a right to reach the control room. A whole lot of aliens occupy this room so be careful and keep a close eye on your health.
5. Once the area is clear, you can start filling the area next to the teleporter at the southern part of the room with mines. Once you start destroying the Death Ray, the room will start swarming with aliens coming out of that teleporter.
6. When you're ready, head to the switches near the entrance of the control room and press the leftmost switch to raise the generators.
7. You'll need to destroy all four generators in this room to destroy the Death Ray. Once you destroy two of them, the aforementioned aliens will start to flood the room.
8. Kill the aliens before you start working on the generators again. They aren't endlessly spawning.
9. TIP: This would be a good time to use either the Alien Blaster or the Destablizer that you picked up earlier.
10. Once you destroy all of the generators, head through the door to the southwest and use the teleporter to reach the Living Quarters.

Part 4 - The Living Quarters

1. Head through either of the doorways and proceed down the corridor until you reach a section guarded off by a large forcefield and a turret overhead. If you shoot the forcefield enough times, it'll burst in a giant green explosion. Make sure you're not nearby when it goes boom.
2. Clear the immediate area and then head up the stairs to reach a room heavily fortified by aliens in front of you, turrets up above, and abominations down below.
3. Remain by the doorway and move back down the stairs whenever you need to reload or take some cover. Keep on peeking out and taking down enemies until the area is all clear.
4. You can check the downstairs area for a health archway, but once you're ready you'll need to head upstairs and go through one of the doors along the south wall.
5. Head down the stairs and make a right, keeping a lookout for inactive drones that you can re-align and activate to fight on your side.
6. NOTE: If you make a left instead of a right, you'll come to an area guarded by two unshieled aliens and a forcefield. Blow up the forcefield and follow the path down to find your samurai friend standing over a bunch of killed aliens. Nothing important, just cool to see where he went off to after ditching your group.
7. Fight off all of the aliens that line this hallway and then either go into the room to the left where you'll find a room with a bunch of turrets, or blow up the forcefield blocking off the northern path.
8. Either way, you'll eventually wind up back on the path heading up the stairs and into another room where you'll find an abomination, or rather, where an abomination will find you.
9. Kill the abomination and then head into the room ahead where you'll find more of them roaming around. Head up the stairs and enter the room to the east if you want to pick up some more crystals and supplies from the container.
10. Once you're ready to face off against the alien captain and his crew, head through the door to the west, heal yourself at the archway, and then use the portal to transport to the Bridge.

Part 5 - The Final Showdown

1. After you materialize through the teleport, face north and head through the door to finally take the fight to the Alien Captain.
2. Disappointingly, he'll go down without much of a fight as he doesn't have the same shielding that his buddies have. It should take more than two or three shots to put him down.
3. Clean up the rest of the aliens in the bridge and your fellow human survivors will teleport inside.
4. Things aren't over yet though. Another alien captain will appear via hologram to shout some angry gibberish at you.
5. Take a look outside the window and you'll see a huge alien spaceship aiming its own death ray at your newly taken over ship.
6. Sally will begin tasking everyone with their duties. Yours is to man the controls at the front and take care of weapons fire and shield power distribution.
7. The three switches to your left control power distribution between the shields and your weapon. If you press the button all the way on the left, you'll have max shields, but low weapons power. If you press the third button on the right, you'll have max weapons but very little shield power.
8. The large switch to the right of the shield power switches fires your weapon.
9. Basically what you want to do here is switch to max shields when the enemy spaceship is about to blast you, and then switch to max weapons power to fire your own shot off while the enemy is recharging.
10. Keep up this process of alternating between max shields and max fire power until a scripted event occurs where all of your power will go down.
11. When this happens, enemies will flood the bridge and you'll be forced to activate switches on the west and east ends of the bridge to bring the power back up.
12. Once power returns, return to your position and keep up the fire.
13. Eventually, the enemy spaceship will explode and the quest will be completed. Congratulations on completing Mothership Zeta!
14. Now that you're done here, you can return to the capital wasteland via teleporter. Feel free to return to the spaceship any time you like by traveling to the beacon that can now be located on your world map.

Obtaining the Alien Archivist Achievement

There are a total of 25 Alien Captive Recordings scattered throughout Mothership Zeta, all of which must be collected to obtain the Alien Archivist Achievement. Note that some areas of the mothership are inaccessible after completing the quests, so make sure you have all of the recordings in the area before you proceed in the story. Here are the locations of all 25 Recordings:

1. You'll find the first three recordings at the east end of the hall immediately after you break out from your cell. (Logs 22, 15, and 14)
2. The next three will be located a couple of rooms down in the large room that leads to Sally's cell. (Logs 3, 1 and 12)
3. You won't find another recording until you arrive at the end of the first quest where you must unfreeze the rest of the human survivors. There are four recordings next to each of the cryo pods. (Logs 5, 6, 7, and 8)
4. Head to the Robotic Assembly door in the Engineering Room hub and use the portal to the left to reach the Maintenance Level. Fight your way through to the end where you'll be ambushed by a whole squad of aliens. When the area is clear, check the east side of the room next to the door for the recording (Log 19)
5. When you return to the Engineering Core hub, head to the Hangar door and then continue to the right to find a door leading to the Cargo Hold. From there find the door leading to the Research Lab. You'll find a recording in the middle of the first large room you enter after coming from the Cargo Hold. (Log 13)
6. Head through the eastern door right behind where you found the previous recording and head through the tunnel to the next large room. The next recording is right in the middle of the room. (Log 21)
7. Next up, the Cryo Lab. There are a total of six recordings to be found here so make sure you get them all before moving on. The first one can be found by activating a switch to the left of where you enter, then jumping down to the bottom floor at the north, and heading through the newly unlocked doorway. (Log 4)
8. The next recording is located in the room where there are two deactivated robots for you to reactivate. Head into the southern room and go all the way to the southwest corner to find the recording (Log 2)
9. You'll find two more recordings right next to each other in plain sight once you reach the spot where you find Elliott's fallen comrades. They're right at both sides of the door. (Logs 11 and 17)
10. As soon as you enter Cryo Storage, look to your left to find the next recording. (Log 25)
11. When Cryo Storage is clear of enemies, head to the west most room and travel all the way to the southern corner. (Log 16)
12. You won't see another recording until you reach the second half of the ship. Once you reach the Weapons Lab, fight your way to a large room where tons of weapons and ammo line the southern wall. Look for the recording in the middle of the room next to a bunch of electronics. (Log 24)
13. When you enter the Experimentation Lab, look for a room guarded by a single hostile alien and what looks like an alien torture chair. Across from the chair is the next recording. (Log 20)
14. Also in the Experimentation lab, once you reach the room where you must destroy the generator to remove a forcefield, you'll find a recording along the north wall. (Log 10)
15. Once you destroy the generator in the Experimentation Lab, head into the room where the Abominations were released to find the next recording. (Log 9)
16. Once you reach the top floor of Biological Research where you see a bunch of Abominations and Aliens fighting it out against each other, head towards the northwestern corner of the room to find a recording. (Log 18)
17. The final recording is located inside the Living Quarters in a cafeteria-like room that is guarded by several turrets. You can find it along the eastern wall. (Log 23)

1. Not of This World: 20g - Complete the quest: Not of This World
2. Among the Stars: 20g - Complete the quest: Among the Stars
3. This Galaxy Ain't Big Enough...: 40g - Complete the quest: This Galaxy Ain't Big Enough...
4. Alien Archivist: 20g - Find all Alien Captive Recordings.