Pretty well textured, and very moody lighting make the map pretty interesting to look at.. however there is a lot of 'sameness' to it - every area looks so similar that its tough to tell where you are a lot of the time. And the teleporters only make orientation more difficult :P
Good map tho, nice job pulling off the theme - i only have that minor nitpick.
IMO it´s shows an excellent use of the Evil7 texture set, and the blueish lighting theme is giving it a special touch, so there is no need to mix other texture themes in just because we´ve seen a few other maps with those textures lately.
The map has some nice vertical / diagonal combat and is fun for a quick FFA :)