Loved the art (Yutami slays) and the music, but the gameplay feels a bit weird. I got to wave 3 without seeing a single enemy! This results in getting to the shop with too few coins to spare.
Also it would be great to have some visual feedback for hits. I died more than once without even noticing I was hurt, and I even thought the tougher enemies weren't being hit.
I'm not in the jam so I don't know how much time you guys put into this, but good job anyway. It has a lot of potential to be very addicting lol.