Part 44

After dealing with the sandbag wall enemies, escort the security guard to the security booth.

Have the guard open the booth's side door, then proceed through it and down the corridor to section c2a5g.

Upon entering the parking garage, immediately run right and exit outside without stopping.

To confirm the gargantua is trapped, turn back and observe it behind a parked car. If it's still there, you are safe to proceed. If not, reload your quicksave and try again.

Locate the alien whoosh-thing, use it to jump over the wall, and fall into a water tank.

Climb onto the tank's edge, then carefully crouch-walk along the pipe leading to the waste silo.

Jump-crouch onto the silo's top to find health packs and the military targeting system.

Use the targeting system to target the large doors in the back left corner (top left on the map) and call for a missile strike.

Drop onto the slanty pipe and return to the water tank's edge.

Move to the wall, jump-crouch onto it, and proceed across the gate to the slanty part of the outer wall.

Jump onto the bottom of the slant, move along it, and drop onto the concrete to the left of the blown-open doors.

Quickly run through the doors before the air strikes begin.

SRC Note: Alternatively, after blowing open the doors, reset the targeting gadget to aim at the gate the gargantua will break through, or target the wall to the right of the doors and the two large electrical boxes next to the radio tower. Destroying these allows you to escape.

Run down the large tunnel until you reach side stairs. Go past them to finish this section and begin "Forget About Freeman!".

In the next room, run through the gap on the right and down next to where the first ceiling chunk falls.

Jump-crouch onto the narrow ledge next to the falling ceiling chunk and move into the control room beyond.

After the shaking stops, jump-crouch through a window into the area ahead.

Find the red railing and practice jumping over it. This is your escape route.

Bash the crate near the security guard for a health pack, then have him follow you.

Go to the right side of the large opening into the room with crates.

Use the crossbow to sneak-shoot the alien grunt around the corner to the right of the wooden crates.

Back off and use the hornet gun to destroy the wooden crates.

As soon as the vortigaunt behind the crates sees you, run for the railing, jump over it, and retreat into the control room.

Crouch and move to the switch on the wall or keyboard on the table.