This is a great game! Never at any point in the game did i feel like the bullet hell was too intense or difficult (this is my beef with a lot of bullet hell type games, difficulty is too high and the payout reward for upgrades is too low, complete opposite here. Its the perfect blend of difficulty and payout that makes it rewarding to continuing playing) there were some enemies such as the green splitters and the lazer beams that ramped up the difficulty but it never felt unfair, perfectly balanced that makes the game fun and enjoyable. The only real thing i can say that would need some improvement is the tutorial in the beginning of the game, the white text on the busy background can sometimes be hard to read, this could probably be fixed easily if you just add in a dialog box, also making it possible to replay the tutorial from the menu/options would also be great.
 "Curl Up and Fly!"){kind=icon}
 "Save To Kill"){kind=icon}
 "Sentry Knight"){kind=icon}
Many thanks, Luxina!