CVG's got a summary of an OXM piece detailing the multiplayer modes from Chronicles of Riddick: Assault on Dark Athena, and very scary it all sounds too.
The title includes 12-player Deathmatch and CTF, as well as Butcher Bay Riot, which pitches three teams of four against each other.
Guards, mercenaries and prisoners are playable. A Counter-Strike-style weapon purchase system is in force in this mode.
More through there.