Interesting idea! And I liked it ^^! I liked the art and music a lot, the concept is really good, and the enemy variety is great! The hitboxes are a bit frustrating: sometimes, I was clearly visually hitting an enemy, but the crumble just went through ^^'. The shops are a nice addition, but I don't know if I was getting just getting unlucky, but I only got one.
Overall a really cool concept that I enjoyed playing, congratulations!