Download here: http://umh.sandcrawler.net/index.php?page=downloads&command=view&id=220
This map is a port from the Killing Floor mod, that has been upgraded by me. Dastard is the orginal author, and all credit for ideas, textures, and meshes go to him. I upgraded pathing, upgraded zombie spawning (so they reach you faster), added two additional Traders, and trader doors for all three.
The initial port that this version is based off of was by SexyMeat.
Beta 1 (9-18-2010)
Initial release, with new pathing, traders, zombie spawn upgrade, more weapon spawns, and a handful of other gameplay changes. Any feedback helps.