I enjoyed the style of your game and felt that your chosen exchange was a good fit. I also enjoyed the music that you chose/created, though at times it didn't seem to fit quite right with the visuals.
As stated by previous commenters, I felt that one of the biggest issues I faced was my inability to accurately predict where my character's hitbox was. In a bullet hell style game such as this one, that proved to be quite problematic.
Additionally, I thought the use of fourth wall breaks was interesting, if a bit heavy handed.