Part 26

Kill the rocket emplacement operator by detonating a tripmine placed too close to him.

Move along the ledge to his area to find a health pack and his dropped gun.

Crouch-walk along the ledge until the marine starts firing rockets; they will go over your head.

Shoot the marine's leg until he dies.

Continue along the ledge until you approach the area where the rail car was stopped by a lowered barrier arm.

Get out the .357 and slowly crouch-walk along the left ledge until you can see and shoot a vortigaunt on the other side of the tracks.

Sneak carefully along, edging around a pillar, until you can shoot the next two vortigaunts across the tracks.

Watch the hallway leading off the main vort area and kill the first vortigaunt that comes after you.

Crouch-strafe left until the second vortigaunt down the hall comes after you.

Crouch-strafe left until you can see and shoot the final vortigaunt in a corner to the right.

Jump across the track and find a first aid station to the left.

Go down the hall to find green crates blocking access to stairs.

Stand back and shoot one of the tripmines past the crates with the pistol.

Jump-crouch onto the single crate and walk across it.

Ignore the two headcrabs in the ceiling area just past the crates, or toss a hand grenade up there after quicksaving.

Crouch-walk up the stairs and bash the two crates to get a C4 satchel bomb.

Get out the .357 and carefully crouch-walk to the corner past those crates.

Sneak-shoot both marines in the area ahead, finishing them off quickly as they charge.

Check their room for an HEV station and a large switch on a panel to raise the barrier arm.

Hop onto the nearby railing and carefully crouch-drop to the floor below.

Jump over two tracks and go left to find a new rail car.

Ride this car until you encounter another lowered barrier arm; abandon the car or proceed on foot.

To keep the car: Get off by moving onto the left ledge and move back until you can see three wooden crates stacked on the upper walkway.

Use the pistol to shoot the bottom two crates, destroying the top one.

Use the .357 to blast the three marines running around up there, only shooting when they are briefly standing still.

Jump across the track before it splits, then move forward and around the corner.

Quickly crouch as you run toward the base of the upper floor with the gun emplacement.

Quicksave, then get out hand grenades.

Move back so the gun fires but doesn't hit you, then toss a grenade over the sandbag wall to kill the marine at the gun.

Hop across the tracks to climb a short ladder to the upper walkway.

Look along the walkway for a first aid station and dropped guns.

Go to the gun emplacement and use the wall switch next to it.

Return to the rail car and ride until the next rail car elevator.

Stop the car short of the elevator and check the side area for C4 satchel bombs in crates and one underneath the small personnel elevator.

Send the elevator up, drop down to get the satchel, and climb out using the ladder.

Recall the elevator.

Get into the elevator and ride it up to a large stack of explosive crates.

Get out C4 satchels and toss one through the gap between crates (move up to the gap and jump before tossing).

Ride the elevator back down, detonate the satchel, then ride the elevator back up.

Pick up the satchel near the elevator, then look for a splattified marine's dropped weapon next to two crates for supplies.

Slowly crouch-walk along the rim of the rail car elevator shaft to reach a small red-lit room with two AR grenades.

Look down and across the shaft to see marine legs to shoot with the pistol.

Crouch-walk back across the shaft rim, then find the long ladder near the elevator.

Climb down to the bottom to claim the dropped weapon of the marine you leg-shot.

Climb to the top of the ladder to find boxes for ammo.

Climb down the ladder to the floor with the elevator, then strafe off the ladder to land on the floor.

Take the elevator down, then get on the rail car and ride it up.