I've read on the Darkest Dungeon forums that there's an option to turn off the corpses being left behind after you kill an enemy. I can't seem to find that option anywhere in the options menu, though. Where is it?
I almost deleted this question, since I found the answer a minute later and feel like a dolt, but it is in the options menu. It's just that you actually have to be in a campaign to see those options. If you're on the main title screen, you don't see them.