Note: This code requires a six button controller. PressB + C + Y + Z during game play.
The descriptions of the various enemies in the game are as follows.
Enemies of different types do not have much respectfor each other. If they accidentally shoot each other, they willturn on each other. If you have very little ammunition or health,this can be used to your advantage. Enemies of the same type (withthe exception of any Former Human and Lost Souls) will not attackeach other.
Go to the dark section inside the red door area. Punch the wall behind the green armor at the back of the dark area. This will lead into a secret section.