Thank you so much for playing my game and for the detailed feedback! I'm really happy that you enjoyed the puzzle design and the mechanic of controlling multiple balls at once. That idea was the core of the game, so it's great to hear that it felt fun and unique.
I think you're absolutely right about the audio. I actually had the same feeling while testing the game myself. I'll replace some of the current sound effects with more suitable ones in future updates to make the experience more pleasant.
Also, this was actually my first game as well! I had a chance to play your game, and I really enjoyed the shooting mechanics. Congratulations on finishing your first game jam project, and thank you again for your support and feedback!