Call of Duty: Black Ops 3 cheat codes:
Secret Menu in Data Vault:
In the Data Vault, highlight the "S" logo that would typically
allow you to access Dead Ops Arcade 2. Press and hold all four
shoulder buttons on your controller. As you continue to hold those buttons,
press [X]+[Y] on your controller (or the equivalent for PC version)
and you'll bring up a secret menu, where you can enter cheat codes.
Enter one of the codes below for the corresponding effect.
MANIFEST - Receive up to 100 Fabrication Kits.
DREAMLAND - Access Nightmare Mode without first clearing the campaign.
Disable Annoying Startup Intro:
Follow the steps provided below to disable the loud and annoying startup intro.
Go to your Black Ops 3 folder:
"C:\Program Files (x86)\Steam\SteamApps\Common\Call of Duty Black Ops III"
In your Black Ops III folder, go to "video".
Search for "bo3_global_logo_logosequence.mkv" and rename it,
Now instead of a Video it's just a black screen.