Nice platformer, I enjoyed the rotating level mechanic! Great visuals and sound!
Minor critiques:
Never been a fan of platforming levels that require the player to jump up through a gap the size of the player - this has always been more frustrating than challenging.
Someone else mentioned the saw blades slowing things down and I agree for certain levels in the game. Make the cycles flow a bit more pattern wise. I LOVE how they look and their effects though.
Designing tight platforming levels is really hard imo and I think you did a great job overall! :D