Strange! Enemies should take damage from the void so it must be some sort of bug (clearly), sorry to have your run stopped short because of that :(.
I'd *love* animations, it was basically the next priority on my list of things to do when I hit up against the deadline. I just didn't have any pre-existing code or support for them coming into the jam and couldn't manage it in time. Kind of unfortunate because it really would improve the legibility of the game a ton.