Wow, cool game! Love the retro aesthetic you got with the graphics and sound (and even the gameplay). Will say, it def took me a minute to figure out what was going on since the asteroids didn't get in my peripheral for a hot minute. It felt pretty slow at the beginning, which I think led to my confusion with what was going on.
I also experienced significant performance issues when starting the game. Doing things for the first time like grabbing power-ups, getting destroyed, and unlocking stuff would freeze my game for about 10 seconds then continue playing.
Regardless, awesome stuff~!