That was fun! The art is quite cute, and the mechanics are competent. The music is a bit strange, but quite pleasant.
Those were cool boss fights! A bit long without ammo, perhaps, but the mechanics were solid! Although, the first time I beat the map boss, I hadn't beaten the key boss, so I got blown up with no chance.
In the starting area, the enemy shooting sounds stack together and become considerably louder than everything else.
The resolution seem a bit large.
Good work!