Call of Duty: Modern Warfare 2

This trophy is story related and will pop at the end of the mission "The Gulag". This trophy is unmissable. 

This mission sees you extracting a prisoner from a russian prison which is an old castle, you start the mission by shooting the enemies from the helicopter, aim for the explosive barrels to speed things up. Once you land you have to shoot enemies above you and also on the ground. Once you enter the building its dark and you have to put your night vision on. I personally didn't as I don't like the thermal view. For the rest of the mission you make your way around the prison corridors and shoot the ememies. You will eventually reach and armoury and you have to defend it, just sit in the corner with a riot shield and you'll be fine. Make your way through the prison until you reach reach the breaching door, breach the door and kill only the enemies, avoid price (guy strangling an enemy). Follow your team mates now and then you get lifted out be helicopter and escape.