That was pretty fun, and I have some comments:
- The moving and shooting was great and felt very natural.
- I like the variety in enemy types.
- The option to upgrade a few stats was neat.
- The bosses felt a bit cheap to me. The homing missile forces you to move, but the rapidfire traps you in place. It doesn't feel like there's a way to avoid taking hits there.
- I think the enemy bullets are a bit on the quick side.
- The music got really repetitive really fast.
Still, all in all, fun game!