I decided to give the new DMZ Beta a try since it just released four days ago on November 16th. I teamed up with one of my brother's and one of his sons. We found that just doing a couple of contracts and exfiltrating was the most successful. If you do three or more contracts or stay in the zone too long, you increase your chances of failing by getting killed by other squads or buffed AI bots.
In my humble opinion, this mode seems the most satisfying compared to all the other modes in Modern Warfare II. I wasn't dying every minute, and it was paced better rather than running into a hot arena like all of the other modes. It felt good to be able to extract weapons rather than grinding to get their blueprints in other modes. The XP gained from successfully extracting and exfiltrating felt much more rewarding. The slower, more real-to-life tactical pace felt alot like Ghost Recon, and Division and was a welcome change.
Call of Duty: Modern Warfare II drops players into an unprecedented global conflict that features the return of the iconic Operators of Task Force 141. The stakes have never been higher as players take on the role of lethal Tier One operators in a heart-racing saga that will affect the global balance of power. Call of Duty: Modern Warfare engulfs fans in an incredibly raw, gritty, provocative narrative that brings unrivaled intensity and shines a light on the changing nature of modern war. Players will be thrust into an immersive narrative spanning the entire game. Experience the ultimate online playground with classic multiplayer or squad-up and play cooperatively in a collection of elite operations, accessible to all skill levels.