If A.I. Developed a dark sense of humour

But then the bullet would go through the ghost or hologram, going through your wall and killing the living, then you'll have a real ghost to deal with on top of a hologram.

Wrong, I have bullets that are made of special materials, The metallurgical mix will dissipate and destroy the ghost or zap the computer generating the hologram. Whichever..

Aludin or the Cyberdemon, can't remember which

Unreal tournament 04' character... god help me

I guess we're all screwed then.