'Outlaws' brings new XP rewards and Achievements/Trophies for you to unlock. It also includes six new co-op missions for 2-4 players. In the press release, Rockstar provided details on three of these missions:
 * Walton's Gold - Walton's Gang have taken control of a mining camp rich with gold. Fight through the camp and load your mine cart with as much gold as you can carry and get out as fast as you can - Walton's boys have rigged the place to blow.
 * The River - Ride a raft down river, taking out rebel encampments along the way until you reach the rebel stronghold of Nosalida and a final epic battle for the town's massive weapons caches. Watch out for Gatling gun-equipped enemy rafts.
 * Ammunition - The Mexican Army has the town of Tesoro Azul under siege. Storm the gates under heavy cannon, Gatling gun and sniper fire to destroy the Mexican artillery placements.