Nice! I'll be playing again for sure.
How do you do your music? I have really no idea about making music for games, and your music is truly amazing.
I wouldn't add extra characters. Maybe making the level groups have different feels, aestethics and different gampelay elements from one another would be better to make the game richer :)
I'd ditch the bar or refill it instantly when on solid or blue land.
Great game! Consider me a fan :) I'm surprised you have nothing more on itch