Great idea and execution. And OH MY GAWD THE ART IS THE CUTEST THING EVER! I love the fact that you can run around like an idiot with the corpses of your enemies. Would love to see them stacked into a staircase with pick-up being also restricted to one time per cadaver. Too bad I couldn't take them through the door, tho. I was looking forward to killing other guards with their dead mates.
By the way, gently dropping the knife instead of throwing it worked for me.