Very cool!
I think it could've used some more visual feedback (screenshake, particles, whatever else there is) and a bit more of those small animations you added for the purple wool monsters. e.g. the lightning would've been 100x times more amazing if it was animated a little bit as well.
Having the character animated to display when the attack is ready is a really good little detail in order to not display any UI! Perhaps you could've added an sfx or visual effect to let the player know even better that the attack is ready again.
I loved that you could go in alone again after losing for people with a big ego^^