I like the idea of fighting a boss monster with rhythm! The art is very cool. Needs more clarity on the keys though - while the rhythms aren't that hard to play, it's extremely hard to tell which key to press. One way to improve clarity would be to have the beats come down and then color code W and S to differentiate them from each other. Also, the game rhythm didn't match the music. And I was able to walk 2 steps on one clap.