Campaign is fun... Multiplayer is Awesome!
Sound - Great sound. Cant really think of anything significant about it.
Gameplay - The campaign is fun, although the story is a little dry. The ending leaves you asking questions, and wanting more. After you play the campaign you must try the online Co-op or the Competitive. The Co-op is very fun I've gone through many hours of trying to level up and become a high ranked Special Ops, and Medic.
Overall - The game is great and if you got buddies that have this game you'll have a fun time grinding your characters to there max level. I'd actually recommend buying this game if you spend alot of time playing Online Multiplayers.