Thanks for taking the time to share your feedback!
The sound effects are based on the original game, which understandably is limited given the Arduboy hardware. There's also a chance I messed up the port since I never heard the original SFX, only inferred it based on the code. I agree the blaster sounds are annoying: 0.5 seconds is way too long, and the Doppler effect doesn't help. Let me see how I can tweak it and better use Playdate's extensive sound SDK.
Saving settings... oops. I had that on my to-do list and forgot about it :)