Operation Chaos is a crucial side mission that requires you to decipher a coded message to identify a mole. This mission is accessed from the Safehouse mission board. To complete it, you'll need to find three pieces of evidence scattered across various main campaign missions. These pieces of evidence are: a 'Coded Message' (from 'Redlight, Greenlight'), a 'Numbers Station Broadcast' (from 'Brick in the Wall'), and a 'Dead Drop List' (from 'Echoes of a Cold War'). Once you have all three, return to the Safehouse. You'll need to use the 'Coded Message' to find a sequence of numbers, the 'Numbers Station Broadcast' to find a city name, and the 'Dead Drop List' to match the city to a name. The solution is randomized for each playthrough, so you can't just look it up. This mission is a true test of your detective skills and attention to detail, offering a rewarding narrative payoff if solved correctly.
While Operation Chaos emphasizes deduction and puzzle-solving to identify a spy, it mirrors the investigative memory-hunting mechanics found in Code Vein’s fragmented Vestige sequences.