It was pretty easy to grasp what was going on, and to understand the consequence of hitting the bat box. It was fun to learn that I could use my orbs to look ahead and to find obscured platforms. The length seemed just right, and the checkpoints were nicely spaced. It took me a while to figure out that I actually used my mouse to aim the orbs - I thought they always shot downward at first. Perhaps adding a slight click effect could help poke players to understand that they can aim
Here's a playtest