Now that the mysterious Building 21 is live in Warzone 2.0 DMZ, you can start making your way through the challenging new area. But before you can begin your journey through Building 21, you need to acquire an access card, which is far easier said than done. These access cards have a chance of appearing in Al Mazrah from within the DMZ mode, with multiple ways to acquire them. But how exactly can you get your hands on a Building 21 access card and what’s the easiest method? Here’s what you need to know to begin the Building 21 quest in Warzone 2.0 DMZ.
