Nice game, I loved the ArtStyle and music is good
You should add some more levels
The game feels too zoomed in. To fix this you can slow down the player, zoom out the camera or make place the camera a little ahead of the player when he is moving to one side or the other
Also, you can infinity jump and wall jump
finally, you allow player to go through platforms when gravity is upside down
overall, Good work
Feel free to check out my game :D