You start at the bottom of this map. Pull the first of 3 movable blocks to the right. Climb over it and push it once more to the right, so it blocks the entrance. Pull the middle block once to the right. Then push the leftmost block once to the left. Now you can climb onto it to reach the ledge above.
Climb up and pull the movable block once to the right. Climb onto it and jump to grab the ledge above on the left. Pull up and drop down on the other side. Step into the teleporter (T1a) to emerge in a room to the right (T1b). Push the movable block to the left and step into the other teleporter (T2a) to return to the first teleporter room (T2b).
Push the movable block all the way to the right edge and climb onto it. Jump to grab the other block, which you moved earlier. Pull up into a hallway above the second teleporter room.
If Lara is very low on health, run to the right across the crumbling floor above the spike pit, climb the ladder, drop down on the other side and get the medipack. Return down the ladder the way you came and jump back across the spike pit to the left. If you don't need the medikit right now, leave it, since you'll return this way shortly.
Climb onto the ledge above on the left and wait for the spikes on the ceiling to retract before running past. Turn around, grab the ledge above, wait for the spikes on the floor to retract and then pull up and run to the right. Continue to the right and pull the movable block once to the left. Return past the two sets of cycling spikes to the hallway above the room with the second teleporter.
Jump across the spike pit (or run across the crumbling floor above it if you didn't do that earlier). Climb the ladder, drop down on the left and get the medipack (if you didn't before). Jump the gap, climb onto the block you moved earlier and then go up the long ladder. Continue climbing past the gargoyles shooting fireballs.
At the top, run to the left across a crumbling floor above spikes. If you don't need the medikit in the room on the left, push the movable block twice and climb the ladder past the purple spirits. (Skip the next paragraph.)
If you do want the health, leave the movable block where it is. Climb down the ladder, drop to the floor and kill the 2 monks. Climb the ledges on the left and use the medikit. Then climb the long ladder, avoiding the purple spirits as you go.
At the top, walk to the right and jump to grab the nearest block. Pull up, jump to grab the next block to the right and pull up again. Drop down on the other side to land on a square block. Drop and hang from the left side of that block, drop to grab a thin block below, then drop onto the block below that. Turn left and jump to grab the edge of the ledge with the spikes along the left wall. Don't pull up. Instead drop to grab the ledge below. Then drop to the narrow ledge below that. Turn right then jump to the right. You can't quite clear the spikes, so immediately climb out on the right before Lara's health drains away.
Climb the ledges to the medikit. Jump across the gap. Still hanging from the ledge, wait for the gargoyles below to spit fire, and then slide down the rope. Jump over the pressure pad (P1), which triggers the spike trap (T1) on the ceiling, and exit the level.
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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