I really enjoyed playing on this. The style reminded me of some of the halo reach maps made in forgeworld. i thought the sightlines where great and not too over powered. along with the use of glass to show players going down to the bottom area. i also liked your use of teleports in the back of the base as a way in and out.
Your kill barrier around the map does need work though as players can still escape. there was also zfighting(when two pieces overlap and flicker) id suggest fixing that.