All Fall Down Prey Guide (2006)
Last update: 11 May 2016
Go forth. When you enter the big room, kill the technician and press the switch to the right (#69). You'll turn on the wall walk this way (#70). Use it and kill the enemy before he manages to turn off the wall walk. If you can't do that, you'll have to turn it on again.
After a short walk you'll reach a room in which you'll see a lot of containers filled with people. Kill the enemies and push the cocoon towards the passage (#71). Shoot it to reveal a force field. Spirit walk through it and use the switch (#72) to turn it off.
Get rid of the enemies in the room ahead and turn right. There's some ammo in there, and a small corridor (#73). Use it to reach the balcony. Enter the sewer through the narrow path (#74). Turn right again and go down, stepping carefully along the pipes (#75).
Go through the next corridor. At the end you'll see a huge room with two platforms in it, divided by an abyss. Get rid of all the enemies and search through the ceiling. You'll see a grav-switch (#76). Shoot it and go towards the other end of the platform. Hit another grav-switch (#77).
You'll see two more buttons (#78). Both open portals that lead to different parts of the complex. Use the panel to the left to materialize a path to the platform containing a regeneration spot. Spirit walk in here to see a glowing path (#79) leading to a pipe. There's some ammo in there.
The switch on the right opens up the passage to the toilet (#80). At the end of the corridor there are two terminals (#81) in which you can charge your energy gun. There's also an arcade in there, which you can use to play cards. Watch out for the green ooze coming out of the walls. Remember that you can destroy the vomiting organs that generate it. The door is locked, so get back to the toilet. The portal (#82) that got you here will now transport you to an entirely different room. At the end of the hall there's an elevator (#83). Take time to ride it, looking around in awe.
Before you get through the metal door, spirit walk and look the left (#84). You'll discover an ammo locker in there. Go forth and don't stop until you reach the corridor in which you saw the girl's ghost. Look up and shoot the grav-switch on the ceiling (#85). Go forth and you'll see a portal (#86).
You'll now have to fight off some ghosts. Enter the platform in the middle of the room (#87) and wait for them. These small enemies (#88) will throw projectiles at you. Try to avoid them, as they can get quite harmful. To get rid of the ghosts, you have to use a gun against them. After dealing with the kids, enter the half-open door (#89). Go forth and turn left to find a portal that will lead you to the next chapter (#90).