How did no one think of this before?
Earnings and unlocks from the single-player campaign transfer over to the multi-player portion of the game, and vice-versa. That is brilliant. Folks who went through the campaign first don't start out feeling way-too-weak when they tumble into multiplayer with ranked-up opponents, and multiplayer junkies don't feel like they're wasting their time playing the single-player game.
Well, Killzone Mercenary. You are looking attractive, aren't you?
Oh my. I do believe you're givin' me the vapors.