Here are our Unlockables for Call of Duty: Black Ops III on Xbox One. The most trustworthy items get the most 'thumbs up' from our users and appear nearer the top!
Nightmares Mode campaign – Finish all of the main campaign missions. Alternately, use the cheat code DREAMLAND to unlock Nightmares Mode early.
Dead Ops Arcade 2 – Once you gain access to the safe house after Mission 2: New World, interact with the data terminal and select the blue and white logo in the upper left corner. This will let you play Dead Ops Arcade 2.