If the queen uses her tail whip attack, it permanently ♥♥♥♥♥ up her animations. She'll be walking horizontally for a few seconds, the the game will crash.

Warriors don't aggro you at all, even if you punch them in the face ten times.

Facehuggers don't aggro either unless you basically stand on them.

Aand i've been playing on a modded map. I haven't seen a single one spawn so far. I dunno if that's a bug or not, just mentioning it. I spawned all these with the console.