Introduction
How to Unlock the Basement Door and access the secret area under the KGB safehouse in the Call of Duty: Black Ops 6 (BO6) campaign. Learn how to unlock both the Basement door and the boiler room door.
How to Open Basement Door
Solve the Piano Puzzle to Open the Secret Basement Area
Solve the piano puzzle by playing Mi, Re, Ti, Do, Re in order to unlock the Door leading to the safehouse’s secret area.
How to easily open the boiler room basement door
The safehouse has two basement doors: a hidden door to the secret area and a regular door to the boiler room puzzle, visible from the main hall outside the evidence board room.
