~Doom Levels

A little tip.

For those of you who like to edit doom levels.  I have found a 
neat little thing.  If you make a level with a door that only 
the player can open and you kill any enemy that leaves a body 
(eg.Cacodemons,Imps) underneath the door.  If an Arch-vile revives 
the monster,the monster can walk through walls and cant be killed 
with anything else but the area effect of a rocket.
