Hey I played your game and it is working well, here is my feedback...

• great to see there is a tutorial
• nice main menu
• good art style
• player could move around a bit faster with smaller collision so is possible to dodge
• nice upgrade system, i like how there are multiple ship types.
• i did not realize the coins were good at first, i thought they were bullets. try to differentiate them more
• i like the count down to start a wave
• it would be cool to see more varied bullet patterns
• good music and sound effects
  

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!

Love the game! The upgrade system is nice and killing enemies is really satisfying. I can really see the space invaders inspiration. :)

Holy S*** that was instantly fun!! Great Job!! I will have to actually spend time playing this to have any feedback. 8.5/10!!