The Vulture Achievement in Assassin's Creed: Revelations
Perform 5 Ground Finish in Manhunt during a session as The Brigand (Multiplayer).
How to unlock The Vulture
Ability Unlocked: N/A
Character: The Brigand
Mode: Team Objectives - Manhunt
Choose the game mode Manhunt and be sure to choose The Brigand. If the game mode changes or someone else picks that character, quit out and try again. You do not have to have any specific ability to do this achievement. Try to stay close to your target somewhat and never attack. When someone else kills your target, move in and finish them. Repeat 4 more times within same session.