MAP04: Caged (The Plutonia Experiment)

MAP04: Caged is the fourth map of Plutonia.

Secrets

 * 1) Once in the main area, cross the bridge leading west (opposite the blue door). In the next room, there will be a brown sludge pit to the right with three pillars in it. You must straferun (or jump, if using a source port that enables it) from pillar to pillar. The third pillar, which holds a plasma rifle, counts as the secret.
 * 2) After getting the yellow keycard, drop into the adjacent slime pit. There is a switch on the far side. Flip it, then take the teleporter. Head straight forward and go up the short staircase. To the right is an unreachable platform with  a soul sphere on it. Drop into the slime here, and go through the small passage to the right. There's a newly opened teleporter in here; go through to be taken to the aforementioned soul sphere.
 * 3) From secret #2, drop back down into the slime and go through the opening to the southwest. Take the teleporter closeby, and you'll end up in yet another slime pit. Enter the small alcove across the way and flip the switch to lower a lift that you can ride up to a secret combat armor vest.
 * 4) After flipping the skull switch behind the yellow door, return to the highest platform of the main area again (the one across from the soul sphere platform). From here, head west down the stairs toward the tan door. Before you reach it, go through the newly opened doorway and run along the red-lighted catwalk into the alcove on the far side. It is a lift leading up to a cache of health bonuses. The lift is timed, triggered when you walk down the stairs, so it may take a few tries to get there in time.

Records
The Compet-N records for the map are: