The axe thrower wave was pretty tough compared to the others. It was quite easy to kite all of the other enemies into one easy space and spam attack against them. But the axe throwers don't really have an obvious window of attack.
Hitting enemies felt quite satisfying! I'd probably make a separate sound for hitting an axe rather than using the same impact against enemies. It would help with player feedback (as would some visual response to an axe being blocked) :)