I like the idea but I think all levels need some adjustment to make them not so frustrating.
- astroid: The main thing here is that I don't know what to do. Is this just survival, because in the other level you have to go to a specific point. I it is just survival add a counter to the UI "survive for X" or something. Also the perspective made it really hard to detect which astroid is behind and which infront of me. You could add some glowing circles on the ground to communicate this better. Then I would use a plain field with some holes in it and not this terrain mesh.
- WASD?: think the idea is fine but remove the lava in the middle of the track, I think controlling the ball with changed controls and keeping it on the S curve is already hard enougth
- teleport: maby give some indication before the teleport happend. Sometimes I was unlucky and god teleported to a edge while in full speed.
But with a little bit fine tuning and maby more levels this could be quite fun :)