Pig monsters don't appear in-game

[Artsy]

To get this outta the way - reinstalling the game fixed it. A little issue I'm having now is uh... I can't get the Tesla to show in-game. Wretch and Engineer work perfectly fine, no problems with them. But the Tesla, I don't know, I tried scripting it so it would appear after a collision event but it didn't work for some reason. Besides tesla.ent I also tried testing tesla_silent.ent and it just didn't appear either.
Can anyone help me?