Ok
Spoiler, be warned!
Eden - well yearh, good solid industrial DM map
Darkmatch - totally crazy and wicked. Some electric blue tubes are moving through the map to light some areas for some less split seconds or some shacking hanging red lights give also the map "I can nearly see nothing" feeling. Even with full brightness it is nearly impossible to see enough of the map.
Ocean Relic - Summarized in one word: Bioshock !!! With Turbine my favorite DM map of the pack. Berserk can also be found there in some kind of electric field. You should not enter this field with less health because you lose some health each second while you are inside this .. thing.
Uhh yearh.. the Slow field powerup.. I laughed a lot about its design (reversed udamage haha)
Turbine - Yearh. Good. A little bit like Diesel but in a snowy environment. All 4 Armor pickups are there. Instead of the Ripper you find near the belt chamber the Bio rifle and at the former place of the bio rifle there is now a helmet on a crate. Invisibility stayed there were it was always but can now pretty easiliy be seen. An additional smaller wayer gives the player an other escape route where invisible snipers can ambush other players.
Map has a good scale and is not that cramped as like the original.
Koos Barge: Pretty small, very icy but pretty cramped.