Yeah, I didn't have a collider for the enemy hitbox. I just used the default one, which is a capsule, so it was very wonky. I have fixed that in the upcoming update. I have no idea what you mean by the delay. The bats do get damaged if they ram into something. I'm thinking that is what you are seeing, or else it is a bug that I have yet to reproduce. When it gets hit twice, is the bat rushing away from you?