Even if it's just a beta map, you should at least light it before sharing. It doesn't look like the map has been vised, either. From the looks of it, it probably had a leak. The barrel textures are misaligned, and there are a lot of other slight misalignments as well on crates and blocks and such (use the grid!). Using hay for ladders looks weird.
As far as gameplay goes, having just one path to the flag is going to make it too easy to defend. All the ice in the middle allows you to go crazy stupid fast, especially for the size of the paths. Why are there invisible walls blocking the autococker? Why is the automag platform slick?