Two former Army Rangers, Tyson Rios and Elliot Salem, work as contractors for a Private Military Corporation (PMC), taking on missions in various locations. As they progress through their work, they begin to uncover the darker side of their job.
Army of Two focuses on cooperative gameplay, where players can team up with an AI-controlled partner or a live player, using a wide range of customizable weapons and strategies. Players can modify their guns with various attachments, such as magazines and barrels, to suit their playstyle. They must work together to overcome obstacles, heal each other, and take down enemies in a dynamic two-player experience.
The game's multiplayer mode allows for up to four players to team up against each other in three different modes: Warzone, Bounties, and Extraction. Players must complete objectives while dealing with their opponents, making it a challenging and competitive experience.