the Stroyent Dispersal Facility.

Proceed right and through the door at the end of the hallway.

Turn around in this room and head through the next door.

Run in front of Fatty, who will repeatedly try to hit you with his hooks. Keep running and do not stop or look back. If running is too difficult, stop and hide behind the pillars (stay very close to them) as you make your way across. Be warned that the pillars can be destroyed if they get hit several times.

At the end of this hallway, activate the green panel to spray Fatty with a green substance.

Fatty will smash a window near you; run back through it.

Run through the unlocked door straight ahead.

Grab a SMALL HEALTH PACK near the computers.

Step on the lift and ride it up.

Proceed through the next room and catch another SMALL HEALTH PACK sitting on a crate.

Run through the next hallway.

You will now be back in Fatty's room on the upper level. Run towards the middle, using the pillars for cover (press the cover button to crouch behind walls or objects).

Follow the short hallway and turn left to find more computer panels.

Look closely at the panels to see that Fatty's abdomen is at 93% capacity. Click the "Initiate Feeding" button to defeat him.

Turn around, toggle your flashlight, and follow the hallway to the right.

Backtrack all the way down to the lower level in Ex-Fatty's chamber.

Jump through the broken window (or run all the way around if you can't make the jump).

Get close to Fatty and carefully jump down the hole caused by gastric acids.

Jump down the next hole on top of the crates to avoid taking damage. You may be attacked by up to four Strogg Marines from the holes in the walls.

Face the two doors leading out of this room and go through the left door first.

In this room, find a crate containing two SMALL HEALTH PACKS, LIGHTNING COILS, and ROCKETS.

Exit this room, make your way around the previous room (don't fall in the pit!), and proceed through the right door.

In this room, you will fight three more Strogg Marines and a Gunner. Loot the crate near the entrance for a CLIP, SHELLS, BATTERIES, and NAILS. Find two boxes of ROCKETS, some GRENADES, and a GRENADE LAUNCHER around the room. Look behind some crates in a corner for a LARGE ARMOR VEST.

Make your way around this room, which will take you around the pit.

Go through the only other door out of this room. You will notice a large opening in the floor and ceiling.

Loot the nearby crate for a LARGE HEALTH PACK and some SLUGS.

Jump down the opening to complete this level.

In the Waste Processing Facility, take a deep breath and venture ahead.

You will meet Private Lanier. He advises you to avoid acid. Look up to see an orange object moving along the ceiling that sprays acid; do not walk underneath it.

Grab the LARGE HEALTH PACK nearby.

Proceed through the small tunnel on your right. Find SHELLS near the dead-end.

In the next room, a barrel will fall, and a SLIMY TRANSFER will crawl out.