Here are some screens...
As you might be able to tell, the map has a little bit of new art in it. The download includes a modified #13 art file, an ogg track and an altered user.con, which'll replace Hollywood Holocaust. It's adjusted for the different difficulty levels. You start out by a dropship. The basic jist is to get to the other end of the level and pull a switch that will open the dropship door. Once inside the dropship, you'll be able to end the level.
EDIT: Forgot the template. That's attached now, if anyone's interested.
EDIT, EDIT: I have no clue how it happened, but I've just given it another playthrough, and one of the crucial doors had all its tags wiped for some reason. The second upload had the wrong starting position, so it's been uploaded a third time.