I think you nail the difficulty where it feels hard, but the player gets 1% better each time and feel like "okay not this time but I know I can do it", it is a really ny mechanic that feels good.
It would feel better if the character didn't jitter as much, might be worth checking whether or not you're applying force to your character in the physics update loop and not the normal.
Music and sfx also played really well with how the game felt.
Great submission