Was not expecting this level of difficulty from this game. It's very misleading from the art style!
I'm going to have to agree with one of the other commenters who said that there is almost too much variety level to level. Every level introduces a brand new concept and sometimes it's not immediately intuitive how these concepts are to be used, or what the new "rules" of the level are.
For example, in Easter 1, there's a fruit you can jump to get that makes you go faster and... damage enemies and make you invulnerable? But only when you're either dashing or spinning, not when standing still? And yet you don't use that fruit anywhere else in the level, and you actually don't even need to use that fruit at all to get by. It's a bit misleading. A more gradual ramp up in difficulty would be nice.
That said, you seem very open to feedback so that's super promising for your game. The energy, the vibrance, the art style, sound, and character design are all excellent. I really want to love this game -- just maybe consider a less steep difficulty curve?