This was a really neat game! I laughed at the ending
The background looks really nice, I like how it moves.
I feel like as a player, I could get into a really good flow state if I spent enough time on the game. Getting the rhythm for just the right amount of bounce to move through the obstacles. I feel like you might even want to remove the option to move backwards in order to encourage the player to figure out how to find that rhythm.
Also, just wanted to note that I was able to slide along the bottom wall and bypass the obstacles in order to each the end of the game.