How do I get a platinum trophy in Call of Duty Modern Warfare II?

Walkthrough: To get the Call of Duty: Modern Warfare II platinum trophy as quickly as possible, it’s best to make sure you play through the campaign on Veteran on your first go, just to avoid having to go through the game a second time on this higher difficulty setting.

How do you unlock a trophy in Call of Duty Modern Warfare II?

Open three safes in the Campaign. There are three safes to be found across the Campaign of Call of Duty: Modern Warfare II,in two missions - one is found in the mission El Sin Nombre, and two are found in the mission Alone. You’ll need to find all three safes and their combinations in order to unlock the trophy.

How do I find intel in Modern Warfare 2?

You don't have to do it all in one playthrough, because your progress will save regardless. You can find them at any time via Chapter Select. If you've played through the original Modern Warfare 2 game, all of the intel is in the exact same spot. You don't need to worry about finding them in different or new locations.