Carnage from four angles—the only things missing are expletive-laden instructions from your teammates.
Campaign mode pits you and three human friends on a mission to complete any of the five campaigns and play through in cooperatively.
Any unassigned players are controlled by the computer, and your name (AKA “handle”) appears above your character so you know who’s fighting well, and who made dreadful tactical missteps.
New players can drop in and out of the game at will. You can also play this split-screen (Xbox 360), or an offline version with two players (and two computer players).