Here are some few things I didn't like: Sometime's, attacking is not responsive, it doesn't show that I am attack. I don't know if this is lack of feedback or the attack just glitching, I really don't know when I can attack or not. The "How to Play" section, for an information dump, it's actually pretty organised. But a "show, don't tell" approach would be more effective.
Other than that, I liked the arcade style game, it was fun to play. The music was intense, and made me going.