You will pass a blue door (D), then approach a wide curved staircase (E). Proceed straight ahead (west), turn the corner, and leave the room through the passage to the south. Go through the yellow door (C) into a computer room. If you play on Ultra-Violence or Nightmare!, watch out for the eight Sergeants outside the window to your left (guarding the partial invisibility), some of whom may open fire as you pass. Leave the alcove and bear slightly left (not up the blue staircase).
Go up this lift and follow the ledge around to a small technical room containing the yellow key. Follow the corridor to an alcove on your left (east), the far corner of which contains a lift (B). Essentialsįrom the start point (A), go through the door and take the first left. Sector numbers in boldface are secrets which count toward the end-of-level tally. Map of E1M7 Letters in italics refer to marked spots on the map.
