The video above is the Call of Duty Black Ops 3 Vengeance Walkthrough and shows how to complete the Vengeance story mission featured in Call of Duty: Black Ops 3.
The video walkthrough covers the following mission objectives:
Go to the Safe House.
Go to Vantage Point.
Go to the Safe House. (Part 2)
Neutralize the 54i Combatants.
Destroy the A.S.P.
Go to the Safe House. (Part 3)
Go to the safe house panic room.