The "Introducing: Traxus" priority contract in Marathon is, as you'll likely have figured out from the name, required to unlock access to the Traxus faction. It's by far the most difficult quest ...
Go to the app's settings menu, then select Manage all history. Select Delete to wipe your all-time viewing history or for specific periods. Under the Controls tab, select Turn off YouTube history ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results