Cool game, I don't think that I ever played a bullet hell that you have to get close to the enemy. it's a cool concept and using the 10 second theme nailed it for me. It made the game much more entertaining and it worked well with the concept of getting close to the enemy. I think that as others said, it's a bit too hard. However, I don't think that the patterns were bad, maybe getting the collision box smaller or the character smaller would make it easier?
Overall, very cool and unique entry! had fun playing it :)