This level occupies the map slot MAP17. For other maps which occupy this slot, see Category:MAP17.
MAP17: Compound is the seventeenth map of The Plutonia Experiment. The music is "At Doom's Gate", which is the same as for the very first level of the Doom series, E1M1: Hangar.
At the center of the level is a thin roughly "#"-shaped walkway in a pool of nukage. In the northeast corner of the nukage pool, beneath a triangular outcropping of the wall, is a fake wall you can walk right through to get some hidden health bonuses.
After getting the red skull key, a wall behind you will open, revealing some enemies. One of the walls in the back of this newly revealed area can be opened, leading to a hidden radiation suit and a teleporter to a secret area.
At the last room (where you get ambushed by several Imps, a Baron of Hell and an Arch-Vile), in which you must press a switch to gain access to the yellow skull key, the pillar just south of the switch can be lowered to reveal a teleporter that warps you to the otherwise inaccessible highest ovoid platform at ther center of the "#"-shaped outer ledge.
Upon acquiring the rocket launcher (or if you already have one), you can perform a death slide in the exit room by killing yourself with a rocket while running backwards toward one of the yellow skull bars, causing you to pass underneath them and onto the teleporter, ending the level. This was first demonstrated in Vincent Catalaá's 00:09 NM speed run of this level.