Headhunter
From Halopedia, the Halo wiki
Headhunter
Headhunter is an achievement in Halo: Combat Evolved Anniversary. It is awarded for claiming all of the ten campaign skulls. It is worth 50 Gamerpoints.[1]
It is represented by three human skulls in front of a gold star.
Trivia
The name of the achievement is a reference to the Halo: Reach multiplayer game variant Headhunter.
Sources