The Smileys
Described as being among the most intense pack of hunters you'll face, the Smileys appropriately occupy the the abandoned Carcer City asylum. Although they can be heard babbling hints about their past lives, imaginary dogs stealing their shoes, and regressing into caveman-like speech patterns, Smileys are not to be taken lightly.
Some are musclebound murderers while others can be found wearing women's clothing , but they all wear homemade "smiley" masks, hence the name of the gang.
The Wardogs
A group of war veterans, hunting enthusiasts, and survivalists who are among Starkweathers most efficient killers,
using tactics of flanking, baiting, and full frontal assaults. The appearance of the Wardogs consists of the obligatory jungle/urban camo along with ghille suits, combat boots, and face paint, although some wear scarves over their faces. Their speech contains the usual military phrases and slang one would expect to hear from such a group, but not all of them have a real military background, so some improvise. In one mission, they even go so far as to kidnap Cash's relatives, and will shoot them for every time Cash is spotted. Much of their skill can also can attributed to Ramirez, who heads the Wardogs.
The whole game is to stalk and then kill humans. It has been banned in several countries:
Germany: On 2004-07-19, the Amtsgericht Munich confiscated all versions of Manhunt for violation of § 131 StGB (representation of violence). The game, the court said, portrays the killing of humans as fun, and the more fun, the more violent the killing is. They also sensed a glorification of vigilantism, which they considered harmful per se.[17]
http://en.wikipedia.org/wiki/Manhunt_%28video_game)