Really cool concept. I really love that kind of little game with local coop.
I think you could maybe improve the concept by giving the characters more ways to interact. Also faster movement would be a good thing.
I couldn't get to work the arrow on the right side. When you attack the case on the side you get pushed through the respawning peasant witch do a lot of damage, I don't think it was intended.
Overall a fun little game. I will show it to my friends!