From Halopedia, the Halo wiki
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. The achievement could only be unlocked on an Anniversary map.
- Halo Waypoint: Anniversary Map Pack - Achievements
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