Modern Warfare 4 DMZ Secret Bunkers Guide [Full Guide]

According to verified reports from Sportskeeda Esports & BGMI published in October 2026, opening the two secret bunkers in Modern Warfare 4 DMZ requires players to locate specific hidden notes during the Stranded mission to retrieve and input accurate numeric unlock codes. The first hidden vault is positioned on the left side of the main roadway within the operational zone, demanding precise reconnaissance before interaction. Operators navigating the complex tactical environment must eliminate AI combatants guarding the perimeter before accessing the interior keypad interface. The second bunker, concealed deeper within the sector, presents heightened difficulty due to aggressive enemy reinforcements and restricted rotation pathways. Detailed reconnaissance by field researchers confirms that failing to acquire the corresponding paper notes results in permanent keypad lockouts for the entire match duration. Players are strongly encouraged to coordinate squad movements effectively, bringing smoke grenades and high-capacity weaponry to secure the extraction zone successfully. As tactical shooters continue to evolve alongside strict industry regulations similar to [EA Sports FC PEGI 16 Age Rating Raised Over Loot Boxes [Confirmed]](/news/ea-sports-fc-pegi-16-lootbox-crackdown), understanding hidden map mechanics provides a distinct competitive edge for dedicated operators seeking maximum efficiency.