this is a really fun and addicting concept! i did run into a couple of bugs-
-the music seems to stop playing after one loop
-items are not purchasable from the shop
-pressing space in the shop gives you money for some reason
if you do end up fixing these i think it would be a really fun roguelike, but unfortunately i couldn't get far because i couldn't buy any items from the shop. would love to see this expanded upon!