this game is really really fun, i recommend adding a sensitivity slider (as i had to change my mouse settings to play comfortably)
I've also noticed that if you move your mouse fast you can go through enemies, I'm almost 100% sure this wasn't intended but its really fun and felt really good to do while providing still quite a bit of risk, so i don't think its a bad thing at all.
overall this game was REALLY fun, though it didn't provide that much replayability.