I think the game would definitely benefit from some control touchups since in a platformer like this not being able to see where I'm going with the camera (Up and down) or going to land via shadows is a huge frustration for the player.
There's also the spinning platforms a while into the game which don't actually carry you along with them but instead move underneath you, this makes staying on and then trying to jump off at the right direction incredibly difficult since you have to manually follow the platform which is moving under your feet to not fall off.
Gameplay can definitely be tightened up!