-Full Guide- ***Spoilers***
Brief : You, Gaz and Price need to go and Rescue Codename Nikolai
1. follow your team to the houses and kill the guards and move up doing this for the next house.
2. When you get to the field dont worry, hes a good russian but he is still a 'Filthy' Russian (Gaz can smell him XD )
3.now your small team of silent 3 turns into an army of 30, follow the 'Filth' and snipe when at the sniper spot, take out the machine gunners when asked and move on.
4. you encounter some enemies on this hill, use a grenade launcher an RPG whatever you have to, just imagine they all held you captive for two years.
5. provide MORE sniper cover
6. go to the cliffside where Gaz beats up Kamarov for information on Nikolai's Holding place. then rappel down the cliff-type thing
7.fight your way through to the house designated on your compass and get your night goggles on (up on the D-Pad)
8. Breach the house, Rescue Nikolai. And get the Chopper back home