This is also true for the multiplayer-mode of the game which again features an extensive ranking system with the players gaining experience points for killing enemies, winning a round or completing objectives. Once enough experience points have been collected, the player advances in rank and unlocks new game-modes (ranging from deathmatch to pure team-oriented modes), new dog-tags and new weapons and abilities with which he can create his own custom class besides the five standard classes available. Also available is a coop-game-mode for two players called "Spec Ops" featuring several missions going on besides the main campaign in three different difficulty-settings with several different objectives including getting from A to B in a certain amount of time. These missions can also be completed alone however.