Deathloop has many secrets to discover, some of which are missable or don't affect the story. Other puzzles need to be solved as part of the main missions, but they can be difficult to figure out or find clues for. In Updaam there is a Mysterious Door Deathloop players will not be able to open without a passkey. There is only one way to find the right code for this door, but the password will be random for each player.

The Mysterious Door in Updaam can be found down a set of stairs outside the Archives entrance, and it requires a passkey Colt will need to say into the speaker box beside the door. Finding the passkey comes later in the game as part of the "Radio Silence" mission, which revolves around Julianna. Unlocking Updaam's strange door leads to a small area with a cassette and a document that will provide information for diverting power. There is also another locked door requiring Deathloop players to find 3 passkeys to open.

Related: Deathloop: How to Complete the Perfect Loop (The Fast Way)

Deathloop's Mysterious Door Code Location

Deathloop - Updaam Archivist Office Clue

"Radio Silence" is a story mission in Deathloop that starts towards the end of the game. The mission begins with Colt heading to the Power Station to defeat enemies, collect batteries, and start the two generators inside. Continue with the mission until reaching the Archives building in Updaam. The Archives can only be accessed in the afternoon when the shutters are open. Players can enter by sliding under the partially open garage shutter. Go all the way up to the top floor and enter the AEON Archival Office.

Having trouble finding the AEON Archival Office in Updaam? See the video walkthrough from RetroGAMEz on YouTube below to find out exactly how to get to Deathloop's Mysterious Door password!

There are a few documents to collect inside the AEON Archival Office. The passkey for Updaam's Mysterious Door can be found on a piece of paper sticking out of a bookshelf on the left side of the room. The phrase for unlocking the door is randomized, but the location is always the same. After discovering the password, players can head out of the Archives and down to the Mysterious Door. Interact with the speaker to say the passkey and finally get into Deathloop's locked room.

Inside Deathoop's Mysterious Door, there is a cassette to the right and a document pinned next to another locked door. Reading the document will provide Colt with a code to divert the power and continue the mission. The second RAK door requires 3 passkeys to open, and they are found in different locations during the rest of the mission. Updaam's Mysterious Door can be found early on while playing through Deathloop, but it remains locked until players start "Radio Silence."

Looking to find the next 3 keys and finish "Radio Silence" up after unlocking the strange door in Deathloop? Check out the full quest walkthrough by IGN Guides on YouTube below!

More: How to Save Amador The Mask Maker in Deathloop

  • Deathloop Poster
    Deathloop
    Released:
    2021-09-14
    Developer:
    Arkane Lyon
    Genre:
    Action, FPS, Shooter
    Platform:
    PC, PlayStation 5, Xbox Series X/S
    Publisher:
    Bethesda Softworks, Xbox Game Studios
    ESRB:
    M
    Multiplayer:
    Online Multiplayer
    Summary:
    Deathloop is a first-person-shooter roguelike action game from developer Arkane Lyon, the creator of Dishonored 2. Players assume the role of Colt, a man stuck on the island of Blackreef, where whenever he tries to escape the hedonistic landscape ruled by eccentric individuals, he dies - and is rebooted back to the beginning of his escape. For Colt to escape this time loop, he'll have to assassinate eight targets that are the keys to shattering the deathloop and his freedom. However, his escape is impeded by a mysterious fellow assassin known as Julianna, hell-bent on killing Colt for reasons unknown. Deathloop allows players to experiment on how they'll break the cycle by making it possible to tackle targets in different orders and utilize unique, otherworldly powers and guns to decimate their foes. A multiplayer mode is also available for those looking to cause a little mayhem, where a player can assume the role of Julianna as they hunt a player-controlled Colt.
    How Long To Beat:
    16Hours