Advance cautiously. The checkerboard floor has 5 broken tiles (32-36/51), some with concealed spikes underneath. Run carefully across each one to shatter it for the "After Us the Deluge!" achievement/trophy. The far left tile hides a small medi pack (25), so be sure to drop in and pick it up.
At the rear is a switch. It opens the door to the right releasing 3 lions (30-32). You can pull the switch, hop back, and then jump onto the block above the switch.
The lions can't reach Lara there. (Alternatively, don't pull the switch yet, and wait to shoot the lions from above in a little while. Or, if you're not after all kills, ignore the lions altogether, since there's no reward in the side room.)
Go around to the right of the switch and find the movable block. Pull it twice. (The level exit is behind it, but don't leave yet.)
Go around to the side and pull the block out into the room.
When you can't pull any farther, go around to the other side and push the block once more.
Now you can use it to climb onto the wide ledge above the switch.
If you want all the kills, run around behind the angled block toward the doorway in the back right corner.
Roll and shoot 2 rats (33-34) that spawn on the other side of the ramp. Back up into the doorway if necessary, but try not to fall off the edge, especially if you haven't already killed the 3 lions (30-32) in the room below.
If Lara does fall off the ledge, there's a switch switch in one corner of the lion room that opens and closes the door.
Return to the wide ledge above the first switch and pick up the large medi pack and 2 sets of magnum clips (26-28). Drop down and go around behind the switch, to the opening where the movable block was. Fall down the long shaft into the next level.
DARK MODE: Even with brightness adjusted, dark images on a light background can be hard to see. May I suggest a reputable dark mode browser extension, such as Dark Reader? (Download only from trusted sites, like darkreader.org or your browser's web store.)
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