I liked it, the graphics and the way you mission select in the solar system makes it stand out from other bullet hell games.

Edit for response: The only thing I didn't like was that it seemed too easy, but I haven't gone to the other levels so I don't know if it gets harder. Maybe make it more hard at the beginning and less rounds for the first level. After round 30 I felt it should have moved to the next level or become more of a challenge by then.