CHAPTER 10: BERLIN CATACOMBS

Before using the tunnel glider, burn through a crate with the laser cutter for 80 armor.

Operate the tunnel glider using inverted controls: hold the right trigger to move and maneuver with the left and right sticks.

After unlocking the first gate with the laser cutter, stop and look for a pipe blowing bubbles near a cliffside opening. Exit the glider, swim down the rock tunnel to a secret room. Collect the gold plate from a wooden platform, a letter from the floor near the second bed, and Enigma Code Piece 3:2 from a desk.

Proceed to a gate blocking the path. Exit the glider, use the laser cutter on the chain.

Reach another gate. Exit the glider, dive to find a hole in the rocks below marked by a yellow objective marker. Swim through, and on the other side, use the laser cutter on the chain. Return to the glider and continue.

Encounter a large fan. Exit the glider, climb the ladder, and hold the handle until the fan creates a gap to swim through. Get back on the glider and proceed.

Ignore the path to your right. Continue through the next area prematurely to find a gold ladle on a platform. Exit the glider and grab it.

Move through the door, exiting the glider. Take a left, climb the ladder, and pull the lever until the water rises to the platform BJ is looking at.

Return to the glider and go through the next fan. Enter a tunnel. On the other side, exit the glider in the lit-up area on your left and swim to a room. Collect the gold lantern from the floor.

In the same lit-up area, find a second tunnel. Enter it, leading to rubble containing the gold snake.

Go to the ladder used to raise the water. Opposite is another door leading to the other side of a blocked-off door. Collect Enigma Code Piece 3:3 here.

Return to the glider and take it to the platform. Exit and climb onto it.

Swim through the next area. Dive to find an underwater mine. Use the laser cutter on its chain to destroy the boards blocking the path.

Swim through the opening and climb to the next platform. Collect Enigma Code Piece 3:4 from a barrel.

Free a second mine after the first. It will blow up the next wooden barricade. Swim through to find a secret area with Enigma Code Piece 3:5 on a shelf.

Find a locked door. Pick the lock to find an armor upgrade on a crate inside.

Return to the water and swim to the next area. Dive to find a tunnel. Push the left stick to increase swimming speed. Surface in a room with a metal grate.

Drop through the hole in the grate to find Enigma Code Piece 3:6 on a crate.

Continue to the elevator room. Behind a fence, find a gold lunula against crates. Use the pyramid of crates to jump over the fence and enter the elevator room.

Ride the elevator to the top. Follow the train tracks on the left. Stay crouched to stealthily kill enemies: the closest guard, the guard in the lower area, the first commander and his dog, and the second commander.

Loot the area for armor, ammo, and health.