I really enjoy the core of the game but the movement needs a massive overhaul - especially at the lower levels, you feel so sluggish it's unfun, and the enemy knockback is insane - it almost feels like you accidentally added a 0 to the end of whatever value calculates it. Also, this is mostly personal preference, but I don't think enemies and coins should be able to go offscreen after they come fully on, it's just kinda annoying to wait for them to come back after accidentally knocking them too far away. Aside from those issues, I actually really enjoy the simplistic combat and the upgrade tree.