Very cool! Some nice puzzles! (even if you can cheese a couple by shooting the ground and jumping at the same time to boost up :D )
The ball can be very bouncy sometimes, especially when you try to shoot it into some of the holes, some dampening physics materials there might have been good :)
Also the font you're using does not have a sprite for the letter 'e' and 'n' for whatever reason
I think it'd also be really cool if the blue platform would glow or something when charging to indicate it's solid for the ball while the orange would become more transparent :)
But otherwise love the vibe it's giving off :D