Nice little game, I did not quite manage to beat your high score but I got close enough :)
I feel if you leaned a bit more into the "physics" prompt, the game would be more engaging. There are some physics interactions when you push the bad acorns to the side or when those little guys push you away, but I think a way to utilize physics to your advantage somehow would spice things up.
The mini tutorial in the beginning is a nice touch, the game runs smoothly and i found no major bugs. Good job!