: There is one genuine place to get stuck in Marathon 2. Level 4 (What About
: Bob) requires that you punch out two wires while you're in some sort of
: basement area. One wire floods the entire basement area with lava, and the
: other wire opens the door at the top of the escape route. Also at the top
: of the escape route (which is a large staircase) is a save terminal, on
: the inside of this exit door. If you punch out the flood wire first, you
: won't have time to punch the other wire without burning, but if you
: foolishly decide to run up the stairs and save, you can get trapped
: between lava and a locked door, with a save.
You can also be stuck if you flood the level and escape to the surface, without killing everything underground first. Something to do with monsters having to be awake in order to take damage from the lava; or maybe it's a too-many-active-monsters thing.