When you kill the THING you get an item that you DO STUFF WITH door to the PLACE. The PLACE is the place where the coolthing is. There's a prog where the door automatically shuts again in a short-ish amount of time (i.e. not when the area resets), at which point the PLACE IS BAD.


Given the MOB DIDNT DO STUFF it shouldn't have been able to open the door.