It took me a while to get the hang of it, but once I did, discovering the correct path and shifting modes was pretty interesting! Trying to get the timing of the projectiles down despite not being able to see them made for some enjoyable platforming even if there weren't many other obstacles.
The game restarted when I reached the green square at the bottom level, so I assume I reached the end. Overall, it was a nice entry, if a bit confusing at first.