Got to the end, by the end it was extremely stressful, and I’d say to some extent even obnoxious. I was only able to complete it because (I think) the asteroids didn’t actually work.
All in all, I like the concept (I had a very similar idea), but I think a bit overtuned in terms of difficulty - which does tend to happen when you’re your own playtester. It is however very engaging, which is a good quality to have.