Holy cow that was fantastic! I got totally addicted. Everything about that was great, super creative. I could totally see this being expanded after the jam with multiple levels and you need a certain amount of points to beat the level, perhaps adding new enemy types. The only thing I would change is to decrease the time you need to wait before making another move and to make it so when you have a skeleton at 0 he can still defend that 1 turn (it feels bad when you get a score of like 154,000, but lose track of your skeleton number, thinking you can still get the kill.)