Fun game :D I did realize at some point that I was able to win the game very easily by spinning around and shooting as fast as i can because the bullets travel so far and the enemies don't seem to explicitly come for me. I did really like exploring multiple planets though, the viewport and controls were really nice and felt very 'action-y'.
I think with some more unique mechanics or more difficulty added to this, it could be a really fun shooter! I'm also a huge sucker for earning credits ... :D Thanks for submitting!