Cool game, nice mechanic. I'm not sure about the perspective though. For the first crate, the perspective makes you think the crate is blocking the way even though you can still move "south", it took me longer than I'd like to admit, to understand that xD
As others stated though, it definitely needs a checkpoint system. I went pretty far, made a dumb mistake, restarted and it took me back to the beginning so I rage quited :D
But anyway, I liked it, well done!