A sweet story, the atmosphere and visuals are great, and I really like the verticality in the level design. And I did not expect that second level, that was a nice surprise. Also nice that the collectibles are actually useful there. A suggestion I had for the 'helping light orbs': If they flew from the player to their position once the player comes into a certain area or distance of the orb position I think it could add to the feeling of guidance while still needing to explore the level.
A last thing to mention is that the music was really suited and gave a great feeling. Very good submission!