Interesting game! I liked the troll-y aspect of not being in complete control of your character's jump.
If you were to go back to this game, I think you could progress the core challenge by introducing new unwanted alterations to your characters movemens (such as zones where your left/right movement is swapped, areas with different gravities, or perhaps a place where you jump randomly even if you don't press the button). It would also be neat to have SFX and Music.