I'm playing through Dishonored on Normal/mostly stealth for my first playthrough. I kill only where it is absolutely necessary (basically when I don't feel like reloading a save.).
I accidently picked up the perk for turning corpses into ashes upon death. Twice today while I playing I sleep-bolted an enemy at the top of a set of stairs and had him slide down the stairs because of physics. During the slide the corpse would turn to ashes and it would count as a kill at the end of the mission.
Has anyone had this happen to them? Is it a bug? I guess if it's in the game let this be a cautionary tale to those going through with the intention of never killing anyone.