As the only surviving members of an elite Special Forces unit, it is up to you to find the secret underground lab. Go the mission alone or fight side-by-side with a friend in the two-player cooperative mode. Navigate your heavily armed 4x4, speed boat or travel on foot and blast your way through enemy-infested territory. Prepare to be assaulted by waves of formidable enemies with unrelenting attacks. Two can go it together in co-op play online or offline, with enhanced weapons to encourage teamwork