2:35.67!
This is really cool! I don't think I will get a good time here. It's just too much fun diving in and out of the "ground".
I don't know why, but it reminds me a lot of the game "exo one". But your game has far better controls.
You could have different materials, maybe some kind of "wall" that would require you to build up a lot of speed to punch through. The last level shows you got some really cool ideas on how to build upon this simple concept, congratz!