oh nice, what i dont get is how the story works?? im still kinda confused about the game...like do i have to play online to level up and everything?? so its like a story mode online? instead of playing team death match and all that like on COD your playing a story...say like boarderlands?? kinda lol
There's a campaign mode, which runs you through the story from mission to mission, or you can "freeplay" and choose a level.
Each has its own self-containted story-arc, but they fit together if you play them in order, and there's a bigger story behind it as well.
Regardless whether you're playing campaign or freeplay, you can be single-player, or online. You have up to 8-player co-op, and up to 16-player team modes, all integrated together - if you're alone, the rest of both teams (15 total - 7 allies and 8 enemies) are bots, if you're online, the bots just make up the numbers (and replace anyone who idles for too long or quits).
And XP carries over between single- and multiplayer modes, so your character will develop regardless of how you play, or who you play with/against.
EDIT: Tweaked.
Also, should mention that in campaign, only the team that won moves on to the next mission, and the other team replays until they win.