I can't tell if this game is broken or if I just can't figure it out. First off, there appears to be a control that isn't mentioned in the instructions page (called tutorial for some reason), which is Shift to drop a direction. The game seems to lack a way to back out to the main menu or reset (as far as I can tell), and it's easy to get stuck in the game (eg. if you don't grab the first left direction when you see it, you will get stuck). This make the game frustrating, as each attempt requires force-closing the game (using Alt-F4, the task switcher, or Task Manager) and re-open it. Going back to the Shift button, it seems that you drop the direction if you're on the ground, but if you're in the air, it disappears forever (which lead me to more soft locks). Also, after picking up the fourth direction (after dropping one), the game seems to stop accepting input. Unless I'm missing something non-obvious, this appears to be unbeatable.
I will also add that, while a very minor issue overall, the discrete movement was kind of obnoxious. It made it harder to tell how much I was moving at times, and I didn't like having to mash my spacebar over and over.