Very cool concept! A short, sharp curve in learning, and a long, gradual curve to mastery. The art is fun and easy to read, and the music kept me from getting stressed out too much. I can't imagine how this would play if it had different music haha! I know this is just a jam game, but I'd be interested to see how this play style would pan out with different demons, extra abilities, and maybe even an "adventure" mode.