Interesting. I must ask though, how does the enemy AI work? It seems like they just wander around and use some sort of echolocation to try to find you (that also conveniently can't detect you when you're crawling). When one of them spotted me hiding under the table and started charging at me, I had the brilliant idea of crawling out from another side of the table. I figured that since crawling was silent, it would keep attacking my last known location under the table without knowing that I already left.
Well, let's just say that it didn't work. Do enemies always know where you are once they spot you?