There were some really good ideas here. I always love momentum based platforming -- this entry's physics could have used a bit more polish, but it's always super fun to roll down a hill and gain momentum and pull off the perfect stage. I personally could have done without the spinning level... or at least if the level spinning was going to be a thing, I wish it effected gameplay somehow instead of making me sick.
The roll felt pretty good, but the normal platforming felt pretty rough. Even if you want players to commit to jumps, it would be nice if I could jump up a single step without a running start to get some momentum going. The game also struggles because I need to memorize levels as I do them to get momentum... if I could see the whole level and plan out my route that would be pretty cool.