Love this so much, it’s full of soul, and weird as heck. Great music choice. I’m happy to see someone went with the “philosophical” interpretation of alchemy as transformative change (becoming golden and sun-like!), Carl Jung was famously (and weirdly) into this stuff.
If you haven’t seen it yet, Tarodev has a great video on what makes a platformer feel great. I think the lack of Jump Buffering is what made it feel kind of sticky on the jumps over snakes. (And as other people have noted, checkpoints would be cool!) https://www.youtube.com/watch?v=3sWTzMsmdx8