I really love all the sound effects, they are super satisfying and give it a neat old school arcade feel. some classic 8bit music would take it to the next level! The concept of the auto firing cannons is interesting, but it made the game play a bit frustrating as I was mostly running from the enemies and doing constant circles to get the projectiles firing in the right direction. I think adding just a little extra rotation to the guns would help the game feel better while still keeping with your theme idea. good work!