I just played for some minutes and its going really well!
My constructive criticism would be that the player movement speed is too high, this maybe due to the movement code not use the delta parameter or not beeing called in the physics update. I dont know a lot about unity, but i this is a common thing that make games too fast in some machines.
You could as well use a speed limit or a higher friction material for the ground.
Last thing is that this part of forum is more for posting active development on step by step bases, if you plan to keep updating this game is ok, but if was just to share it the best place is HERE!
Anyway, congrats and keep it up bro! Would like to see more games and projects from you in the future!