A Unknown entity on the level.
Male deathmoths, Wretches, Plague Goblins, Brusters & Skin-Stealers
Contrary to popular belief, not all of the doors on Level 2 are locked, or lead to dead ends. Some can lead into Level 3, Level 4, and occasionally back to Level 1. Finding a comically proportioned multi-colored door that's unlocked will lead to Level 283. If you no-clip into an extremely hot area in Level 2, you can wind up in Level 2.1.
The Survivors (29 People)
Office Space EL3A