That was really fun! The movement is just complex enough without being unfair, and the 3d cubed style is simple and loose.
Max volume might be a bit loud (it peaks above +0.0 dB, sometimes reaching +0.2, +0.3, or even +0.5 dB!), but good job on including volume control!
The camera seems to trail behind the player at high speeds, especially on the sloped level with all the red boxes.
Great work!