Yeah, this was alright. The last boss (that I got to) was completely invisible and impossible to hit... Bit of a bummer there... The game wasn't too driving and I did get bored after a bit. make the levels more challenging or make them shorter with more minibosses/interesting things. There were quite a few little things like, accidentally buying items in the shop while the screen didn't appear to be active, moving while the next level shop buttons appeared around you, enemies behind objects completely unable to see them, etc. that could be polished up and made better!
Overall though, pretty great work!