- This level occupies the map slot MAP25. For other maps which occupy this slot, see Category:MAP25.
- Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.
- To the right of the red door in the lower courtyard, there is a computer panel in the wall. Pressing 'use' on it will cause it to open up, revealing a switch. Press it, and a soul sphere will appear in the courtyard behind you. (Sector 1075)
- Pressing this same switch will reveal a small opening in the corridor that houses the super shotgun, exposing a BFG9000. (Sector 1225)
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