Call of Duty’s DMZ extraction mode returns with the launch of Modern Warfare 4, adding new features to expand on the beta version previously introduced in 2022’s Modern Warfare 2. If you’ve never tried DMZ or want to get some reps in before the new game releases, you can still play the original mode. In this guide, we’ll walk you through how to access this free-to-play mode and give you some tips for getting started with the DMZ beta. How…