Great game! I love the little jokes under each upgrade, I love how silly everything looks, and I love Kill-BOI's text to speech when you get an upgrade.
The only complaint I have is that you have to swing the stick in the direction that you're moving. Sometimes I would take a step back so an enemy wouldn't hit me, and then the stick would swing while I was facing away. It'd be nice if the stick would face towards the mouse or something instead.