Part 6

Find a shotgun and shells near a doorway. Proceed through the doorway slowly. Two Vortigaunts will teleport in to the left. Let them see you, then back up to avoid their blasts. Engage them at close range with the double-barrel shotgun. If they don't pursue, lure them back to the doorway.

After defeating the Vortigaunts, proceed onto the metal walkway. A Vortigaunt will teleport in ahead and fall through the walkway. Turn around and wait for another Vortigaunt to teleport directly in front of you. Charge and engage it at close range.

To cross the walkway gap, use the hanging barnacle. Equip the crowbar, quicksave, and jump towards the barnacle tongue. Once caught, look up and wait to be pulled close enough to hit the barnacle. Immediately lean forward to land on the other side.

Collect health packs if needed. Crouch-hop onto the right railing and carefully drop to the large rusty pipe below. Drop to the floor and follow the pipe into a large area with two zombies fighting a security guard on a walkway.

Wait for the zombies to finish their fight and approach your walkway. Engage them with close-range double-barrel shotgun blasts to the head. After they are defeated, move into the room with wooden crates and eliminate another zombie.

Collect the armor vest and shotgun shells. Bash the wooden crates for more shells. Be prepared to engage another zombie just past this room; bash the crates in its room for a pistol clip. Cross the next walkway to find a first aid station on the left wall.

Proceed slowly around the next corner with your flashlight on. A Bullsquid is located below a short ladder. Back up to avoid its toxic spit when you reach the top of the ladder. Move forward until you can see the Bullsquid and shoot it with the pistol.

After the Bullsquid is dead, equip the shotgun and drop to its floor. Turn right and walk past the two large vertical rusty pipes. When next to the second pipe, turn around and slowly walk backward until you hear the first teleporting-in sound. Immediately run forward, ready to engage the Vortigaunt that teleports in directly ahead.

Another Vortigaunt is on the other side of the first rusty pipe; go around to engage it. For the third Vortigaunt, proceed along the pipes' right side again, then slowly move along the side of the large concrete pillar. As soon as the Vortigaunt sees you, back up and wait for it to come within shotgun range.

If the Bullsquid to the left of the Vortigaunt also spots you, quickrestore and try again. To sneak-shoot this Bullsquid with the pistol, go between the second vertical pipe and the pillar, turn right, and carefully crouch-walk while looking left with the flashlight. Shoot it when you can see part of it.

After this Bullsquid is dead, crouch-walk down its passage and look around the corner to the right to find another Bullsquid to sneak-shoot. Run up to its area after it's dead to find shotgun shells, a health pack, and a bullet clip within breakable crates.

Turn around and head towards the visible power box on the wall ahead. Do not go directly to it. Another Bullsquid is in an alcove on the left and needs to be sneak-shot with the pistol.

After killing the last Bullsquid, use the switch on the power box to restore power to the lifts. Equip the shotgun and return to where you found the supplies, ready to engage a Vortigaunt that teleports in.

Get on the lift past the supplies and use its panel to ascend. Bash the crates near the top for a health pack, then proceed down the walkway to return to section ba_canal2.

In section ba_canal2, proceed along the passage until you reach the ledge next to the large lift with an explosive crate. Bash the two nearby wooden boxes for a pistol clip.

Position yourself behind the explosive crate and push it into the canal. Drop in after it and stay back as it destroys the crate-crushing machinery ahead.

Quicksave. Carefully maneuver between the two pieces of machinery without touching them. Move on to find a ladder to climb.

Look up to see two marines who comment on Shephard. To potentially acquire their shotgun, shoot them with the pistol from the circular walkway. If you are quick, you can kill one before they leave, causing him to drop his shotgun into the water below.

Drop back into the water, crouch to see the dropped shotgun, pick it up, and climb back up the ladder.