• YouTube: Tomb Raider: Underworld - Croft Manor: Protected by the Dead Part 1 (Time: 8:17) | 2

1. Move forward and climb up the wood pillar to a cliff for the checkpoint. TREASURE #1: In a pot literally right next to Lara at the start. TREASURE #2: In a pot next to the wood pillar.
2. From the entrance to the new area, proceed towards the right, jumping/climbing onto the scaffolding, making your way over to a ledge with a health pack. You can also simply climb down to the ground and then back up the scaffolding. TREASURE #3: Follow the scaffolding to the left instead from the entrance to reach a ledge with this treasure. TREASURE #4: Use the flagpole just beyond Treasure #3 to reach the ledge holding it. TREASURE #5: In a pot on the ground below the health pack's location.
3. From the health pack, use the poles to cross the gap, then move on. Take note of the stained-glass windows here, then continue on down the stairs. TREASURE #6: In a pot on the bend of the stairs. TREASURE #7: On the way to the stairs, you may have spotted a removable pole. Perch on the pole and climb up for the treasure.
4. Turn left at the bottom and grab the health pack, then move down the hall, pick up the block and continue on to a pressurized plate. Stand on it to open the gate leading to main area, then hurl the block through while it is still open.
5. Go back down the hall past the stairs into a room with a device in the center. Grab the block here and throw it through the open gate just like before. Roll past the gate while it is still open, then stack the two blocks on top of the plate in the main area permanently open. This will keep the two gates leading in and out of this area. TREASURE #8: Return to and pick up the removable pole you used to get Treasure #7 and bring into the opposite side of this room. There is a hole to place it in there, near the block. Use it there, then perch and climb up for the treasure just like Treasure #7. RELIC #3: Find two more blocks in this area and stack them on the very same plate you threw the previous two blocks from. Once the plate is down, run back down the hall pick up Relic #3, inside a small tunnel that was previously closed off by a gate until now.
6. Head back to the room with the device (where you found the second block) and observe the stained-glass windows above; note the angel figures on the windows. Then go over to the contraption with the four switches, illuminated by the light. The switches rotate paneling above them, creating a silhouette on the windows. You want the silhouettes to match exactly the angel figures; rotate the paneling until this is done for both windows. The massive gate between them can now be opened
7. This must be done very quickly: Facing the gate, turn the left-hand beam of the device in the center until it stops, opening the gate. Let go and run up either staircase to the area where Treasure #7/#8 are located. Jump on one of the broken pillar stumps, then jump forward and fire the grapple. Lara should hook a grapple point almost above the device that opens the gate. Quickly turn towards the gate and swing into it before its too late or you'll have to try again. Don't forget the sprint button (left bumper).
8. Past the gate, run down the hall and up the stairs for a cutscene. Don't pass up the health pack. TREASURE #9: In a pot next to the health pack. TREASURE #10: Keep going past Treasure #9, it's in a dead-end round the corner.
9. Kill the Thrall that attack using the shotgun. Note that when one is down, you will need to smash its body with the Y button or else it will revive. An Adrenaline Headshot or a grenade will destroy a Thrall completely, without having to use the Y button. Once they are dead, grab the health pack by the cage.
10. One of the pillars has the blue sigils from before and thus can be moved. Grab it with the Y button and drag it to the left of the broken cage. Climb the cage, then the blue pillar, then the broken column, then to the small beam across. Shimmy to the right towards another beam, then stand on it and jump ahead to a grip, and from there to the exit. TREASURE #11: Before you start, drag the blue pillar to the right of the cage and use it to reach a column that leads to the treasure. TREASURE #12: In plain view as you make your way to the exit, across from the beams.
11. Head up the stairs to a large switch that will open up a secret door. Enter the door to find yourself at the very spot where you began the game in Prologue. Proceed through the next areas, exactly how was done in Prologue. TREASURE #13: Don't miss the lone pot on the way up these steps to the large switch for the secret door.
12. After the cutscene, use the grips on the fireplace to scale up to the atrium above. From the atrium, jump to the pole, then onto the bulletproof glass, and scale down the other side. The level ends and you will unlock the Croft Manor Expedition achievement.

• YouTube: Tomb Raider: Underworld - Croft Manor: The Unnamed Day (Time: 3:48)

1. Get used to the controls of the bike before driving down the road. Left trigger to brake/reverse, right trigger to accelerate, A or B for emergency brakes, left/right bumpers to fire weapons, Y to mount/dismount. TREASURE #1: In a pot inside the first tunnel you come across. ACHIEVEMENT: "Roadkiller", "Master Roadkiller": As you play this level, make sure to run over every enemy you see with the motorbike until its unlocked.
2. The first tunnel ends into a gap you must jump over using the small ramp in the center. Continue on till you reach a cutscene of a temple. TREASURE #2: In a pot right on the other side of the gap. TREASURE #3: In a pot on the steps of the temple.
3. Climb onto the smaller pillar and leap to the grip of the bigger one. Reach the upper grip, then jump to the temple wall. Follow the grips as they lead around to a ledge to drop down to. Enter the room the ledge leads and grapple a sliding hook inside. Rappel down outside and the hook will be pulled forward, opening the temple door. Grapple wall run right inside the door and hurry inside. TREASURE #4: In a pot inside the temple just beyond the opened temple door.
4. Grab the jaguar head inside and use chimney jumps to move up to a hole in the ceiling. Use the portal in the room to go back outside, leaping to the balance beam then back down. Kill the panthers from the safety of the pillars.
5. Get back on the bike and drive through the mini-maze of stone walls to a staircase leading down a massive hole. TREASURE #5, 6: Both in pots up against the walls of the maze, hidden under foliage. Search for them on foot. TREASURE #7: In one of a pair of pots close before the staircase.
6. Drive through the hole out the other end and make a right at the fork towards another temple. Grab the health pack by the pots on the left, and another next to more pots in front of the temple. TREASURE #8: In a pot next to the first health pack. TREASURE #9: In a pot next to the second health pack.

• YouTube: Tomb Raider: Underworld - Southern Mexico: Xibalba Part One (Time: 10:23) | 2

1. Stand behind the crank in the center of the "calendar" (gears) and press Y to use the jaguar head you collected earlier on it. Note the plaque symbol near the crank; all three similar symbols on the three gears must line up with it.
2. Turn the crank until the medium-sized gear's plaque lines up properly (you will hear it snap into place). Go to the skull pedestal and move it to the left. The center gear will now move separately from the medium-sized gear. Turn it with the crank into position. Return to the skull pedestal and move it back into proper position. Get back on the bike and drive down the other road in the fork.
3. Cross the first spike pit using the ramp, and avoid the second by going up the embankment on the left. (You will need to do this backwards for the return trip). After the small tunnel, the paths split again: Path A on the left, Path B straight ahead, Path C on the right. TREASURE #10: In a pot next to the small tunnel.
4. Go down Path A, till the bike can go no further, and dismount. TREASURE #11: In a pot on the small trail that runs to the left up and along the main route going down Path A. TREASURE #12: The same small trail ends into an abrupt right turn down a slope into the main route. Check the plants between the wall and the tree on that right turn for a well-hidden pot.
5. In the next area, let the panthers and mercs fight each other, then kill the winners. Grab a health pack on the altar in the center. Look for a second health pack at the top of the steps to the pavilion. TREASURE #13: In a pot towards the left-hand side of the area, against the wall supporting the pavilion above. A sniper is usually positioned above it. TREASURE #14: In the above pavilion, in a pot on the right-hand side, near the edge.
6. Run up to the ruins and look for a pole up inside the one on the left. Use the grip to reach it and pull it out. Shove it into the left-most of the three ornate hole-in-the-pillars (close to the pillar you pulled the pole out of). Use it to reach a grip above, and follow it to the footholds in the temple wall. TREASURE #15: In a pot near where you use the pole. TREASURE #16: Very near to Treasure #14, on a pillar. You will need to use a pole in the hole on the pillar to reach it. You can use the pole by the ruins or get a second one lying in the grass at the bottom.
7. Move right across the footholds and when Lara is stopped, leap back to a balance beam that is off-camera. Continue onward along the path of balance beams to the right towards a small balcony. TREASURE #17: In a pot at your destination, the small balcony.
8. Climb to the top using the flag poles here, jumping from them to a long pole and then upwards to a cliff. Follow the path and use the grapple point to rappel down. TREASURE #18: The pillar with the flag poles has the treasure on top of it; jump to it from the cliff. TREASURE #19: After rappelling down, look for a pot inside a hole in the wall nearby.
9. From Treasure #19, go to the right and around to a small area in the back. Climb up the platforms here, go to the left-hand side of the edge and fire at the grapple you just used. Move right so that it slacks against the block on the pillar, and press Y to yank the line, sending the block crashing below and opening a new path. TREASURE #20:. Can't miss this pot as you scale up to grapple the point.
10. Whenever you see Lara's grip weaken and the yellow symbol appears, press Y to safety grab or she'll fall. Drop down onto the long grip below, then drop straight down again onto some hard-to-spot footholds against the wall. Jump from them to the column and slide down. Climb up to and grab the golden skull from the altar, then climb the nearby column to a grip. Follow the path of grips and footholds out. TREASURE #21: Use the other column, the smallest one in the room, to reach a grip that leads over to a pot with the treasure.
11. With the skull in hand, squeeze out of the hole in the front door of the temple. Watch out for mercs and return to the bike. Drive out of Path A and head down Path B (make a left at the split).
12. Drive through the jungle, jumping over spike pits. At the next temple, mercs and panthers will attack. Climb up to where the mercs were and push the block here towards the gold hole a little ways away. Look for a pole nearby and climb up the block to place it in the hole. Push the block back so that you can now leap onto the pole, pulling it down and opening the gate; enter the new passage before it closes. Don't forget the health pack near the block's original position. TREASURE #22: In a pot near the gate you open.
13. You are now on the other side of the ball court, which has its own "calendar" (set of gears, just like before). Press Y above the hole in the ground to use the skull. Set the gear plaques same as last time. This will trigger a cutscene that will show a massive stairway, leading underground, opening up inside the ball court. TREASURE #23: In a pot in this area.
14. Return to the split. Path C leads to the ball court itself. After opening the stairway in the ball court, you must drive to it from Path C before it closes. The new passage is timed; if you tarry too long, the first calendar you found (near the beginning of the level) will deactivate and close the stairway, and you will have to drive back to it to reactive the device, then back to the ball court before it closes again. If you are successful, you will get a new cutscene and begin the next area. The ball court itself also has plenty of treasure if you wish to obtain it. TREASURE #24: On the steps of Path C, leading into the ball court. TREASURE #25, #26, #27, #28: There are four pots with treasure inside the ball court's outer perimeter; to find them more easily, get off the bike and search for them carefully on foot.

ACHIEVEMENT: "SPEED-DEMON 1": From the moment you open the stairway in the ball court (i.e. after the cutscene), if you drive from your current location to the stairway into the next area within 45 seconds, you will get the achievement. It does not matter which calendar you use to open the staircase in the ball court (arguably, the first calendar has the simplest route). Try parking your bike close before you start, and perhaps practice the drive first.