Cool submission. Very distinct visual style, and you nailed the depressing atmosphere it appears you were striving for.
I understand that this game is supposed to be hard, but for me at least, it wasn't the kind of hard that made me want to keep throwing myself at it until I won. Instead it just seemed to test my patience.
If you toned down the difficulty of the platforming and added longer levels with more platforming mechanics, I can see this being a really interesting full game.