I love this game! The art is cute, i like what you did with the music. The best part by far is the movement system though. It fits the style of a foddian game very well. There is a surprising amount of depth to it as well. I like the bullet time addition as well.
some feedback:
I know the almost no air control was a deliberate choice, but I think where you land after you swing is already very hard to control precisely so giving some leeway would make the game feel a bit better. That being said I personally would still keep it a lot lower than any traditional platformer (the game is still supposed to be about swinging good)
The game isn't super long so this isn't that big of a deal, but because of how the tumbling works after you fall and because a decent amount of the platforming is done on thin blocks with little height variation to catch you if you are tumbling to the side, falling at all often means falling all the way down no matter how high you were before falling.
I would probably also make the first swing up to the platform in the tutorial a bit easier.
Please don't take the points before the wrong way, I adore this game. I went back after my first playthrough to mess around with the movement and needless to say the game is only scratching the surface of what's possible. Will probably play some more to see how low the time can go.
Great job!