Definitely see the Binding of Isaac influence :D
Pros: I like the particle effects and animations. The art and sprites are good. I also like the exploration (is the cave dungeon randomly generated each time? that's cool.)
Cons: I felt like the pacing of the combat was a bit slow, and I mostly just spammed attack button. I got stuck in the cave, wasn't sure exactly which room I was in and how to get out (maybe there's no way out? it drops you in the center of a room when you enter the cave.) When I died and returned to town, I couldn't move, so I was stuck and had to reload the page. Some audio would be a nice addition to the game to make it feel more alive.
Overall nice job, I could definitely see this being fleshed out more--all the systems are there, just requires some tweaking :)