
In the last section, you retrieved the GOLD KEY and returned to the pool below the waterfall, near the start of the level. Climb out of the water on the ledge with the keyhole and ladder. Use the GOLD KEY to open the gate on the left.

You may be able to complete the next underwater area in one go. Here, we'll do it in two breaths to make things easier. Start by swimming through the gate along the surface until you can't go any farther.

With full lungs, swim down and forward. Where the tunnel widens, make a U-turn to the right.

Swim through the opening to the left of the face panel into a small, dark room with closely spaced pillars. The gate closes behind you, and another pesky fish (19) appears. You may be able to kill it with harpoons, but this takes time (and air) so ignore it for now and heal as needed.

Swim between the two wooden pillars with the faces.

Find the lever on the back of the first pillar and pull it to open the exit and a trapdoor elsewhere.

Continue around the first pillar and through the exit, which is located on the same wall as the entrance.

Outside, make a U-turn to the left...

...and return up the wide, sloping passageway to the pool below the waterfall. Climb out on the ledge with the keyhole...

...and shoot that fish (19).

Swim back down to the room with the lever.

...

This time, head for the back left corner and pick up the small medi pack (30). (It's a lot easier when you aren't being nibbled by an aggressive carp.) The left gate closes behind you, but the other gate remains open.

Once you have the medi pack, swim out of the lever room.

Continue straight ahead then upward...

...through the open trapdoor.

As you near the surface, aim for the right side of this large pool.

Climb out of the water in the cave opening with wooden support pillars. (Do not enter the cave yet, or you'll start spawning spiders. These are covered in the next section.)

Shoot a second fish (20) from this doorway.
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