Fun, cute little game. I loved the music and the controls/design of two characters. I found the section with the dropping cube at the end to be super clever.
I ran into two bugs though, which made it pretty hard to finish.
1) I accidentally stacked two cubes on top of each other at the end, and it glitched out where I couldn't move the cubes at all, I would just walk through them.
2) When I reset and did just one cube, and pushed it into the hole, it would not let me jump while on top of the cube.