Where to use the counting room vault key in DMZ in Modern Warfare 4
In Modern Warfare 4’s DMZ mode, the counting room vault key unlocks a door inside the Heavenly Luck casino in Cheongun Village. The key is awarded for completing the “Operation Silent Ledger” story mission, and the room contains valuable loot.
From the main entrance, turn right and follow the corridor through a security room to reach the locked door. Entering from the less guarded rear brings you onto the casino floor; cross to the southern side and head towards the main entrance hall. The room is on the floor above the Aston Martin Dreadnought and contains two safes, cash and other containers.
In short
- Complete “Operation Silent Ledger” to earn the vault key.
- The locked room is inside Heavenly Luck casino.
- Find two safes and cash inside, then exfil.
Explained simply
DMZ is an extraction mode in the Call of Duty series, where players enter a map to find equipment and valuables, then try to leave safely. Keys found or earned during missions can open specific locked rooms, making them useful for accessing extra loot.
The Heavenly Luck casino is a location in Cheongun Village, and its counting room is a secured area inside the building. The vault key is tied to the “Operation Silent Ledger” story mission, while the room’s safes and containers hold items players can collect during a run.