This is great! My only real criticism is the character controller. Maybe the way jumping worked was intentional, but I feel as though a predefined jump arc only works in very, very specific games. And in this one, which at moments requires precision platforming, it just isn't too great of a fit, and definitely caused moments of frustration with the game.
The pacing and level design was spot on, and the presentation was great too. Polish up the movement, consider some more ways to expand upon the core idea and you could have a really great game to sell in the future :).