Fun game, short and sweet :) Managed to complete all the levels, and I'm sure you would've added more if there was time! Art and music felt like it fit the theme nicely as well.
Might have benefited from some additional levels that clearly introduced the double-jump and wall-jump separately, having one place that can only be reached by double-jump, and another that can only be reached by wall-jumping, as it wasn't obvious to me that there even was a double-jump until like level 5.
Overall, good job!