Well, it's just change the 3D models that infrared have, I guess. Change defs.h
to allow more enemies surfaces and copy-paste a few code lines.

I really found strange Bender like the others. He don't appear, in no way, the
strong man that he is. (And if you provoke him, instead of giving you a punch,
he will take a Exterminator, what, by the way, also makes him appear weaker.)

This framework... Appear that will give a lot of trouble.