This was fun! Sometimes things got going so fast that I think it's unrealistic to hold on to combos, but that's alright. I think as it stands right now it's a little on the easy side (I never really felt like my core was in danger), but that's not a bad thing; the graphics and music / sound effects are a real vibe, and it was nice not to be too stressed while I was appreciating the ambiance. Moving between the orbit levels and killing enemy ships on the way between those orbits was particularly satisfying.
Great work!