A good standalone game. The music was a main selling point.
A few suggestions:
I feel the controls were a bit too sensitive. I always seem to move a little too far to the right or left and miss my shot. Adding a bit of aim assist or homing might fix this, but showing the turn speed would also work.
Also, the earth has way too much health. I don’t think you should expect your player to get hit that much. When I tried to die, it took a good few dozen to kill it.
Anyway, good job. Thank you for sharing!