I enjoyed the game, bullet hell's are my genre of choice so always nice to try new ones.
I think that the controls took a little bit of getting used to, but were good past that. I think that the idea of adding puzzles into the game is a fun twist, however I think that you could have gone more into that aspect. As the game stands now you can easily play through without actually using the puzzle aspect at all.
Overall it is a great entry and a good time to play!