The Vault of Trophies - Level Start to Aqua-Lung
From the starting point, swim forward and around the corner to the left.
To get past the first set of retracting spikes, aim for the top where there are no horizontal spikes. Then swim through when the vertical spikes retract.
Beyond the first set of spikes is a four-way intersection with an air pocket in the ceiling. Take a breath here if you like.
NOTE: Again, it's OK if Lara takes a little damage from the spikes. This shouldn't affect the achievement/trophy. This is true in the Steam version anyway. I still recommend not overwriting your level-start save, in case you need to replay.
The current draws you forward, toward a second set of spikes, but you can avoid them by taking the long way around (below).
For the more direct and dangerous route, swim along with the current toward the spikes. Aim low and swim through just above the horizontal spike as the vertical spikes start to retract.
At the next four-way intersection, there's a second air pocket in the ceiling.
- OR -
Alternatively, to avoid the second set of spikes, after taking a breath at the first air pocket, follow the passageway to the right.
At the next corner, turn left.
Then left again.
Continue to the next four-way intersection, where you'll find a second air pocket in the ceiling. The spikes that you avoided will now be on Lara's left.
From the second air pocket, follow the passageway to the left (or straight if you took the long way around the spikes).
This passage appears to be a dead end, but there's a well-lit vertical shaft on the left.
Swim down here.
At the bottom, level out so Lara is facing the vertical support beam, then head to the right. (The other passages are both dead ends.)
Swim straight on through a long tunnel with wooden supports.
When you reach a T-intersection, turn left.
Continue forward...
...then right.
Follow the tunnel forward and upward to surface in a small, air-filled room.
Climb out of the water on the right side of the rough ledge. Pick up bandages (1) and an Aqua-lung (2). If you're after the "Won't Catch a Breath" achievement/trophy, do not equip the Aqua-lung.
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