I'm not done with your game yet, so I don't have the "final thoughts", but I wanted to leave some comments already:
1. I could see the random tearing showing up between the tiles, while the camera was moving. You may want to fix this
2. Right now, while falling, I managed to accidentally get up there, but I pulled it off only once. Other than that, I always get stuck in this part of the tutorial. I can't get through! Not sure if it's not enough control while midair, too high falling velocity, or the collision with the platform not detected.