Overall, "Army of Two: The Devil's Cartel" is a fun and action-packed co-op shooter that is perfect for players who enjoy playing with a friend. With Xenia as a playable character, the game offers a fresh and exciting playstyle that adds to the game's replay value. While the game's single-player experience may feel lacking, the co-op gameplay and visuals make it a worthwhile experience for fans of the series and the genre.