To the left is a platform above a vertical shaft. This lift is designed to move but can't because two ledges block it from descending. Climb the ledges to the right of the entrance, hop over the electrified floor and use the computer (C1) to retract one of the ledges (L1) below. Return to the left, jump across the shaft and use the computer (C2) to retract the second ledge (L2). Now when you stand on the movable platform and use the computer (C3), the platform can descend.
When it reaches its new position below, two ledges again block the platform. Go to the right. Wait for the steam jets to begin to cycle off then run past into the next room. Use the 2 computers (C4 and C5). One retracts one of the ledges (L4); the other retracts a block (B5) in the room to the left. Return to the lift shaft and jump across to the room on the left.
With the block in the floor removed, you can position the movable crate beneath the ledge. Climb up carefully to avoid the lasers and use the next computer (C6) to retract the second ledge blocking the lift shaft. Climb back down and return to the right to the platform. Use the computer (C7) to lower the platform to the next floor.
Once again, ledges prevent further descent. Climb up on the right and carefully jump across the moving platforms to the alcove on the other side of the room. Be careful not to fall onto the electrified floor. Use the computer (C8) to retract one of the ledges (L8). Jump back across to the left and cross the lift shaft. In the room to the left, use the computer (C9) to retract the block (B9) next to it. Immediately draw guns and shoot the dog and security droid. Use the computer (C10) to retract the other ledge (L10) below the lift platform.
Return to the right, hop on the lift and use the computer (C11) to lower it once more. Hop off on the left and follow the hallway to a ledge. Climb up and use the computer (C12) to lower a ledge (L12) near the top of the map. Get back on the lift and use that computer (C13) to move the lift all the way to the top of the shaft.
Hop off on the right, climb the ledges, avoiding the electrified floor, and jump to grab the ledge you just lowered (L12). Climb up to the exit.
NOTE ON ITEM & MAP CODES: Each level and item has a code, which can be found on the map screen or item info screen. Once you have a code, you can enter it on a page at the Tomb Raider Mobile or Eidos Mobile UK web site to access a level map or detailed item information. My walkthroughs include all of the item info, as well as my own maps, which are a bit more detailed than the unlockable ones.
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