I completed the game.
The game was fun. It looks good, especially the boss parts, and sounds good too. It controls very well and the combat part is fun, I really like that the enemies don't shoot only in straight line as they can't move. I like the open structure with 4 parts you can do in any order, the overall difficulty is appropriate and the boss fight is a satisfying conclusion to the game.
This is a cool entry, thanks for sharing.