This is a really good looking game, way to go! Good atmosphere was established. I really like the design of the rotating stones and the blue/red orbs! Audio wise, the footsteps on stone are muffled vs. other sounds, and jump sound feels odd, like wet cloth hitting something. One time, when I was carrying a crate and pushing another crate, the one getting pushed shot off into space, and I assume a new one then dropped into its place. Laughs ensued, so feature, not a bug!
I did have one big issue, at top of the 1st level, the first time I tried it, the crate didn't activate the button on top, but it did after I restarted the level.