
In the Call of Duty: Black Ops 4 (BO4) Blackout battle royale game mode, players can unlock characters by completing challenges. One such challenge is the Wake the Sleeper Agent, which is required to unlock Mason, a central character in the Treyarch series. To complete the challenge, players must first obtain Mason's stained white t-shirt from crates around the map and then travel to the Array location. Once at the Array, players must locate and activate a button on the terminal in the centre of the radio tower. Finally, players must stay alive with the stained white t-shirt in their inventory, with placement requirements varying based on the game mode.
| Characteristics | Values |
|---|---|
| Challenge Name | Wake the Sleeper Agent |
| Reward | Unlock Mason as a playable character |
| Prerequisites | Unlock Reznov, Play as Reznov |
| Step 1 | Find Mason's stained white t-shirt in supply crates |
| Step 2 | Travel to Array |
| Step 3 | Locate and activate the button on the terminal in the radio tower |
| Step 4 | Stay alive with the stained white t-shirt in inventory, reach top 15 in Solos, top 8 in Duos, or top 4 in Quads |
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What You'll Learn

Unlocking Mason
To complete the challenge, players must first obtain Mason's stained white T-shirt, which can be found in random supply crates around the map. Once the T-shirt has been collected, players must travel to Array, where they will need to locate and activate a button on the terminal in the centre of the radio tower. This activates a countdown and plays a nuke sound. It's important to note that while interacting with the terminal, no prompt will appear, but players can still interact by holding the designated button.
After activating the terminal, players must stay alive with the stained white T-shirt in their inventory. The specific requirements depend on the game mode. For those playing solos, they need to make it to the top 15, while duos must secure a top eight placement, and quads require a top four placement. Completing these steps will result in successfully unlocking Mason in Blackout for Call of Duty: Black Ops 4.
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Finding the stained white T-shirt
To find the stained white T-shirt in BO4 Blackout, players must first unlock Reznov and select him as their character in Blackout. Players must then play a match and search for the stained white T-shirt, which is Mason's T-shirt, in random supply crates around the map.
The T-shirt is an essential item needed to complete the Wake the Sleeper Agent challenge, which allows players to unlock Mason. This challenge is one of the highlights of the Blackout game mode for Black Ops 4, as it allows players to play as characters from every entry in the Black Ops series.
The stained white T-shirt is challenging to find as it can only be discovered in crates scattered around the map of the Call of Duty battle royale game mode. Once players have obtained the T-shirt, they must make their way to the Array location on the Blackout BO4 map.
At the Array location, players must locate and activate a button on the terminal in the centre of the radio tower. After activating the button, players must stay alive with the stained white T-shirt in their inventory to complete the challenge. The placement required to complete the challenge differs depending on the player mode. For example, players in Solos need to make it to the top 15, while those in Duos must secure a top eight placement.
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Travelling to Array
To travel to Array, players must first obtain Mason's stained white T-shirt, which can be found in supply crates or drops around the map. Once the T-shirt is acquired, players must make their way to the Array location on the Blackout BO4 map.
Array is a significant location in the game, and within it is a central building that holds the key to completing the "Wake the Sleeper Agent" challenge. This building houses a console with a blinking green light, indicating an interactive element.
Upon reaching the Array, players must locate the radio tower at its centre. Here, they will find a terminal with a button that needs to be activated. Interacting with the console by holding the designated button (X/Square, depending on the gaming platform) will initiate the process of waking the Sleeper Agent.
It is important to note that simply travelling to Array and activating the button is not enough to complete the challenge. Players must also ensure they stay alive throughout the match while still possessing the stained white T-shirt item in their inventory. The specific requirements for success depend on the gameplay mode, with different placement expectations for those playing solos, duos, or quads.
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Activating the terminal button
To activate the terminal button as part of the Wake the Sleeper Agent challenge in Blackout for Black Ops 4, players must first obtain Mason's stained white t-shirt, which can be found in supply crates around the map. Once the t-shirt has been collected, players must travel to the Array location on the Blackout map.
In the centre building at Array, there is a terminal with a console that has a blinking green light. This console can be interacted with by holding the X/Square button, which will activate the terminal button.
It is important to note that this challenge must be completed in order to unlock Mason as a playable character in Blackout for Black Ops 4. The difficulty of the challenge lies in the fact that it must all be completed in the same match. Additionally, players who complete the challenge in solos need to make it to the top 15, while those in duos must secure a top eight placement, and those in quads must place in the top four.
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Placement requirements
To complete the Wake the Sleeper Agent challenge in Blackout for Black Ops 4, players must meet certain placement requirements. These requirements vary depending on the mode they are playing in: Solos, Duos, or Quads.
For Solos players, you need to make it to the top 15 while keeping the stained white T-shirt item in your inventory. This T-shirt can be found in crates around the map. Once you have the T-shirt, you must head to the Array location on the Blackout map and activate the button on the terminal in the centre of the radio tower.
Duo players must secure a top eight placement. Again, the stained white T-shirt must remain in their inventory throughout.
If you are playing Quads, a top four placement is required to complete the challenge.
It is worth noting that some sources suggest that winning the game is a requirement, in addition to the placement requirements outlined above.
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Frequently asked questions
"Wake the Sleeper Agent" is a challenge in the Blackout battle royale game mode for Call of Duty: Black Ops 4 (BO4). Players must complete this challenge to unlock the character Mason.
To complete the challenge, players must first obtain Mason's stained white t-shirt, which can be found in supply crates around the map. After this, they must travel to Array and locate a terminal with a blinking green light in the centre building. Players must then interact with the terminal by holding the X/Square button to activate a countdown. Finally, players must stay alive with the stained white t-shirt in their inventory, finishing in the top 15 for solos, top eight for duos, or top four for quads.
Mason is a very popular character, and the developers likely wanted to make unlocking him a challenge. The "Wake the Sleeper Agent" challenge adds an extra layer of difficulty to acquiring Mason as a playable character.








































