Coop Storyline question
Hello. I am gonna to buy this great game and i was happy to hear that game include coop mode. What i'd like to know is how coop mode is compared to SP game. FAQ dont cover it in detail. Is Coop story line, missions etc exactly the same as SP? I really appreciate answer because i dont know if should i play SP first or can i start coop with my buddies and get the whole game not loosing storyline. Thanks.