Played browser build and made it to the end. Very nice looking game.
Platfroming could use some work. I missed many jumps close to the edge and just fell off, as if ground check thinks I'm falling too early. You could look up and implement Coyote Time and Jump Buffering to improve platformin experience.
Camera seems to be moving too fast. That might not be a big issue if if also tried to reposition itself to look at where I'm going.
While the game shows me all controls at the start I don't think I'm the only one who didn't pay enough attention to all controls. So I missed that I can press F to spin. Not that it was a big deal, I still beat the game doing much harder running jumps :D But you should add some readable hints along the way to make sure I'm introduced to all mechanics of the game.