Just an idea like that. but I do remember when I used to try thing here. I was ablen to summon a Raptor in Kf Maps for solo-play with the same commands we used to summon extra crawler on some maps and god know I use to hate those... crawler, first times we all got killed...
only problem, is that the raptor, when they die, they still have their UT death, and they did not quite work with KF.
but maybe if you can do the same trick I did, then you could still summon those monsters on KF, somehow.
I could help you, sadly, I'm on a laptop now, old pc is dead, my newest laptop ue linux and I did not install any game, not that I want too. o, yeah, I lost my experience. sorry.
Edit : I think I am out of place here, so bored..
sorry for my non-sense