First off, love the N64 vibes in this game.
Favorite thing:
The obstacles variety, feels like something that would be in sm64, enjoyed the level design a lot.
Least favorite thing:
As others already pointed out, camera controls need some love and attention, struggled to keep the camera steady, an option to invert it would be nice.
What else would i add:
One thing that comes to mind is a boss fight. Not sure how well it would fit the jam entry, but if you want to improve the game further, that would be a neat addition i think.