I enjoyed the game; the third wave is difficult, but after I discovered the type of tank ship it became easier. My favorite feature was the ship's dodge; the animation is funny. I'm usually used to playing this type of game with the enemies above and the player below, but that's not a negative point, just different. After wave 5 I put everything into invulnerability and rate of fire. It was very satisfying to reach wave 10.
Congratulations on the game!