Always happy to see a sci-fi game.
This was a fun idea. I enjoyed slingshotting myself off bits of debris. The spin/swing controls felt a bit cumbersome/counter intuitive, and I found myself wishing that I could reel myself in in some cases.
On one hand, I felt like the goal of 20 dragged on a bit with there being little to differentiate between debris targets, but I also realise that the larger target means more opportunities to lose crewmembers, which is an element that adds something important to the experience.
I would have loved to have seen some more opportunities for feeling like I was making conscious risk vs reward decisions when choosing where to go, which could be something to investigate if you're planning further development.
I also understand that multiplayer was on the roadmap. I think that'd be pretty exciting if you end up being able to realise that.