Complex is one of those maps that inspires people to camp, but often times they take it to extreme levels that are above the norm.
For example, one skilled DMR user can sit on the roof in the middle of the map and hit pretty much anybody.. Put two more DMR ****s in the other ends of the map and you have some serious cross-map coverage. It's a ****ing joke.
Also, that is THE map to avoid when playing Flood. --- Warhammer 40,000: Space Marine is god tier. There, I said it. http://goo.gl/6MEyA ~ Please click!