One of the best in the gamejam!
Great enemy variety, Loved how each enemy is different and they are all really well designed and thought of. Beautiful art(Did you make the sprites and animations etc?).
It's polished, challenging and fun!
The only weird thing I encountered is the upgrade system. It wouldn't allow some upgrades without much sense, for example it would let me upgrade Damage twice, then it would only let me upgrade health and won't let me upgrade speed.
The theme connection could be stronger.