I was a bit confused about the goal of the game - I managed to beat the boss by dying and luring it to spawn. I couldn't figure out if the shop was functional. With some added functionality it could be a good start. Nice job :)
Yeah if you go to the game page you can read more about it. I ran out of time and figured I'd post what I had. I plan to post a few updates in the next week or so. Thank you.