Very cool atmosphere. I was kind of let down by the lack of emergent gameplay with the upgrades. This causes the platforming to feel extremely same-y, especially for people familiar with the genre and have used these same upgrades before. This makes the long climb at the end feel tedious. Adding more wide gaps and adding a speed boost at the end of the slide that you could use to launch yourself could lead to some more engaging gameplay and prompt the player to use the leaf/boot upgrades outside of the few obstacles specific to them.