Interesting idea, but there was really one thing that stopped me enjoying it. That was the debris. It seemed to happen randomly, but when it got in your path, there was litereally nothing you could do to avoid it and it would result in instant and frustrating death. I understand that the logic was to make it "out of control", but it came off more annoying than challenging.
If the character was more survivable or the debris/planet placement was more predictable, it would make this game a great little timewaster. A few small changes would go a long way here.