Bounty Hunter

From Halopedia, the Halo wiki

Bounty Hunter

Bounty Hunter is an achievement in Halo: Reach multiplayer matchmaking added with the Anniversary Map Pack. It was unlocked by earning a Skullamanjaro (capturing 10 skulls at once) in a matchmade Headhunter game.[1] The achievement could only be unlocked on an Anniversary map.

Following the shutdown of Xbox 360 Halo online services on January 13, 2022, this achievement is no longer attainable.[2][3]