While team mechanics are intuitive, the game's potential is wasted on an average campaign and erratic artificial intelligence (AI). Although enemy intelligence is rather impressive -- they flank, use cover, and work vigorously to flush you out into the open -- unfortunately, when the computer controls your partner (versus another person when playing multiplayer), he's often inconsistent. He seemed best-suited for holding position and boosting Aggro while you quietly picked apart enemies. Otherwise, he'll lunge into combat exposed. Firefights are sometimes intense during campaign mode, but levels lack punch, often fizzling out in the end.
As you complete objectives, you'll earn cash to spend on Army of Two's spectacular customizable arsenal. But the ability to upgrade in the heat of battle feels a touch unrealistic. Multiplayer salvages the game somewhat, since you can rely on a human partner instead of one controlled, in part, by the computer. Modes are unique, focusing more on accumulating money than kills. Co-op fans will enjoy the unique experience, but the campaign and inconsistent AI hampers what could have been a phenomenal title.