Part 23

In the room past the railing and crates, use your flashlight or crowbar to locate the bullsquid. Be cautious of its spit.

Access the bullsquid's room via a short hallway. Crowbar the barnacle, then jump-crouch onto a large green crate to obtain a C4 satchel bomb. Smash wooden crates for bullets and hand grenades. Return to section c2a2a.

In section c2a2a, re-board the rail car and ride it up an incline. Stop just past the incline and jump onto the narrow left-side ledge. Bash crates to find .357 ammo.

Proceed to a track branch on the right. Stop the car just past it, get onto the right-side ledge, and crouch-walk down the track branch. Shoot the headcrab ahead to clear the path.

Return to the rail car and ride around the next corner. Crouch to avoid an electrical wire. Slowly move forward to spot two houndeyes on the left and shoot them with the pistol.

Continue slowly until the car is past the track switch. Edge the car to see a bullsquid around the corner. Sneak-shoot the bullsquid until it leaps, activating a turret. Continue shooting the squid to make it jump, allowing the turret to kill it.

To neutralize the turret, slowly ride the rail car forward until you can see it. Shoot it in the leg with the pistol until it is destroyed.

Ride the rail car around another corner and stop at the four-way track intersection. Exit onto the right-hand ledge and follow it to its end. Locate and sneak-shoot a bullsquid in a side area with the .357.

Re-board the rail car and ride towards the next track switch. Shoot the switch before reaching it to ensure the car goes straight. After passing the switch and turning left, slow down for falling rubble. Speed up, but watch for a bullsquid on a platform to the right. Stop the car so the squid is mostly behind a pillar and shoot it with the pistol.

Move the car to jump over the platform's side rail and find a ramp to a lower floor. Dive into the water to find a .357 Magnum and an armor battery next to a dead marine. Use surface movement to avoid leeches, diving only to locate items. Climb the ladder to exit the water.

After quicksaving, jump over the rail track where it slants upward. Move past it to break open two crates containing an armor battery and hand grenades. Return to the rail car.

Ride the rail car forward very slowly. Shoot a barnacle with its tongue hanging over the track before passing under it.

Continue until you reach the side area where you previously dealt with a bullsquid. Park the car and kill a headcrab near the stairs with the pistol. Get off the car to find a first aid station and items near dead marines. Go up the stairs, bash crates for a .357 Magnum, and clear the passage to the room with the previously shot-down turret.

In that room, use a switch to move the crane blocking the exit route near the first track switch. Return to the rail car and ride to the track switch. Duck the live wire, then shoot the switch to flip it. Ride past the moved crane until section c2a2b1 loads.

In section c2a2b1, move the car slowly forward until you see a marine's legs on a higher walkway. Shoot the legs with two .357 bullets to kill the marine. Carefully move the car forward to get off on the right side and onto the lift, but do not activate the lift to avoid fighting two additional marines. Climb the ladder to proceed.