I really like how you introduced the mechanics in the main menu and the animated controls screen was really good:) Graphics are amazing and audio as well! The controls are pretty hard to master (which isn't necessarily a bad thing, it makes the game more challenging) though you should be careful as they can also make the game too hard (there is no way of dodging enemy shots and fight them, you when you point towards them to shoot you have to take damage).
Overall great game!