The multiplayer option in The Last of Us is
now integrated within the premise of the story from the single player
option in basically a 4v4 team death match. With assistance from three
allies, you take on another group having limited re-spawns in each round
(staying alive is the key) while looting caches litter from the ground
to pick up various items which you can use, primarily to craft
additional weapons which you can use in that round.