Very nice, the style, the gameplay, it all works well. It took me a few attempts to get the rotations and jump timing worked out - and then it took me multiple attempts to figure out what to do at the first wall (multi grind on a single rail!? XD) but after that it was smooth sailing.
I can definitely see the puzzles expanding further (moving obstacles, micro jumps/adjustments, etc - as I see you did toward the end), promise with this concept.
Great job!