We have some new information on Battlefield 3 out of gamescom. Battlefield 3 Co-op is going to be a balancing act between single player and multiplayer. You are not going to playing the main campaign but a parallel story to it. Since this is co-op you will be able to revive each other if someone goes down in battle. However you are not helpless you can still defend yourself and crawl to safety while waiting for your buddy.
Co-op stats will also be streamed to the Battlelog to invite competition among your friends to see who is the best team. Your performance in co-op will grant you unlocks in regular Battlefield 3 multiplayer as well. That’s right, it’s not just about the bragging rights, you’ll also further your multiplayer career. The best part is the co-op campaign contains randomized elements to make each play through unique as you will likely be playing them with different friends over and over again. I can’t wait to tear it up and see who’s the best when this comes out.
Source Link: Battlefield Blog