Chapter 33

You'll start off needing to interact with a control panel. Pull it to restore power to the area. This is key because it'll activate a lift you likely saw earlier, and it also powers up a pressure plate on the floor to your right. There's a Zombie standing on it already. Look up at the wall to your right – there's a neon sign with '19' on it. This number tells you how many more Zombies you need to get onto that pressure plate to open the big door nearby.

Now, head back to the left side of the room. You'll see a control panel with three lights, indicating the different levels of this area. You're currently on the middle level. Our first move is to take the lift down to the lower level.

Once you arrive on the lower level, make your way to the right. You'll notice a wheel mechanism, but for now, just ignore it and keep moving. At the end of the walkway, climb down the ladder. Continue down the slope, passing a group of Zombies that have a mind-control device hanging over them. Keep going until you reach a pool of water at the very end.

This is where you'll need to dive into the pool. Go downwards and swim through the tunnel. Make sure you surface as soon as you can to catch your breath – it's a good halfway point. When you're ready, dive back down and head through the tunnel to the right. Keep going until you can surface again.

Climb out of the water onto the solid ground to your right. Then, climb up the rocky wall on the far side of this platform. From the top, you'll need to run and jump to the left to grab onto a rope.

Swing back and forth on this rope a couple of times to build momentum. Then, swing and jump to the next rope on your left. Repeat the process: swing from this second rope and jump to reach a raised ledge above and to your left.

Once you've reached the ledge, continue across the rickety wooden bridge. When you reach the other side, jump across to the wooden walkway that's ahead of you.