Protozoid Slimers became permanently inoffensive to player if they attack him while frozen.
Protozoid Slimer target the player view, not the player himself. Meaning that if the player is looking a camera screen, a Green Slime will change where they are targeting.
If an enemy is standing in a water sector when killed, its corpse will not be on the bottom of the floor.
Battlelords cannot go to a water surface sector. A bug occurs when the player attempts to force a Battlelord in the level Freeway to fall in the manhole, the Battlelord will be stuck and will not fall to the sewer.
Battlelord will not attack the player when he returns to the normal size after he was shrunk.
In Rabid Transit, the player can sometimes end up inside the train when being hit by it, rather than being squished.