Gost Recon Multiplayer....
 

I tried playing Gost Recon in multi player. Only way available is player 1 vs. player2. I think its called Survival mode which is grayed out. Can you play multiplayer on the same team vs. the enemy? thanks

You have to beat the mission first or you can cheat using the unlock all missions cheat:

Enter on the title screen: X, L2, Triangle, R2, Select.

Remember MPs are only for survial. Missions can be coop.