Talk:Keycard/@comment-174.109.163.22-20140112192045/@comment-173.70.218.51-20140116045637

Kill the current boss if this happens, and see if that works.

I had this happen, and when i killed the current boss (whatever enemy has the big health bar at the top of the screen) i was then able to open the door. The boss i killed was the Scavenger (maybe killing the Scavenger unlocked it and it just happened to be the current boss), and when his health went to 0 it was immediately replaced by one of the Imp Overlords that had already spawned, but the doors could now be opened.