Play through memorable missions like "Cliffhanger," "The Gulag," and "Whiskey Hotel."

The platinum trophy is considered moderately difficult but straightforward if you follow a guide for intel collection.

Single-player Campaign ONLY (No Multiplayer or Special Ops) [3].

Focus on enemies holding heavy weapons or those flanking you.

There are 45 pieces of Enemy Intel (laptops) scattered throughout the campaign [2]. Finding all of them unlocks the "Leave No Stone Unturned" trophy.