I like the art a ton, I did run into an issue on the second screen where it just stopped playing for some reason. Couldn't attack or anything. I think other than some gameplay tweaks it also needs music, Great Job though!
Unfortunately on certain browser versions you get softlocked due to the game scenes not loading properly, thank you for bringing this up, by pressing 'INSERT' you can get unstuck. What gameplay tweaks did you have in mind?