The Deck - Subterranean Lake (Max Kills)

The main walkthrough describes how to get the achievements/trophies "A Land Walk" and "No Fish Soup Today." In doing so, you'll miss 6 kills. If you're more interested in murder than achievements, instead follow the route described in the archived classic guide.

Or, follow the route for the "Land Walk" achievement/trophy, detailed here.

Then, after dropping onto the raft and picking up the CABIN KEY (9) and harpoons (10-11)...

...shoot the 3 sharks (9-11) from the raft. Once you jump out of the raft, you can't climb back in. So if the sharks swim out of range...

...head for the long ledge with the wooden crates.

Climb out of the water and kill the guy with the wrench (12) who emerges from behind the crates.

Then finish off the sharks and pick up the Uzi ammo x2 (13-14) behind the crates. Swim back to the cave entrance. (It's on the far right if you're standing on the ledge with the crates and facing the raft.)

Standing in the shallow water here spawns 2 scuba divers (13-14) at the other end of the lake.

Swim out and harpoon them, or return to the ledge where you killed the wrench guy and shoot the divers from above.

You may need to use the M16 to target the second diver, since he tends to stay out of pistol range.

Now swim down, retrieve the Silver Dragon (12), and return to the surface to breathe.

The last enemy here is a barracuda (15) lurking in the water near the tunnel leading up to the hole where you dropped onto the raft. To lure the fish out, swim over to the rock formation near the cave entrance. Swim down into the corner where that rock formation meets the far cavern wall.

Here you'll find a small opening leading into the pool next to the tunnel entrance. Swim through...

...then up to the surface, spawning the barracuda in the process.

Quickly climb out of the water and shoot the fish with pistols.

Then continue into the tunnel. Pick up the main walkthrough at the section "TUNNEL TO THE TOP DECK."

[The Deck Walkthrough]