Call of Duty: Modern Warfare 3 Walkthrough Part 1 - No Commentary Playthrough (PC) Twitter: https://twitter.com/Santosx07 Call of Duty Modern Warfare 3 walkthrough - Here is my walkthrough of Call of Duty Modern Warfare 3. This walkthrough of Call of Duty Modern Warfare 3 will have no commentary. Call of Duty Modern Warfare 3 walkthrough will include missions, boss levels, episodes, chapters and the ending.