After spending 20 minutes trying to get up the second staircase (with the box underneath the second step), I'm afraid I have to conclude the movement is a bit too slippery which doesn't match too well with the platforming challenges you provide. I did get the first staircase after a while, but dang is it difficult to progress like this.
I like the way you combine exploration (which ties in with the theme very nicely) with platforming . It is fun to discover hidden boxes or pipes.
I do still want to finish it, but I get a bit nauseous when playing some first person view games (this happens with commercial games as well, so it's not something you can help), and this seems to be one of those games . Sorry!
It's still impressive that you managed to create a challenging little game in such a short time-span. Good job. :)