Nice work, but there are some things i don't like:
Some of the texturing feels wrong, it still need some work
It feels small and narrow at it's places, the movement differences between cube and sauer are big, as wake already mentioned
You should clip the edges of the map at the fence, that would be a nice catwalk!
The map at the screenshot are slightly different from the map you get in the package
But, nice work, wanna see it imporve!
3/5 so far