Nice art, I think it looks very good for what you're going for. I managed to make it to circle 13. It took me a long time to get it and I was about to give up before I realised that I had to stay in the light cone rather than having to escape it. I think it's perhaps a bit slow to get further, with no way of speeding it up which sadly makes it unattractive to try and improve my score.
I did enjoy all the patterns drawn by the obstacles all around. The health loss sound was very helpful.