Dive Bomber

From Halopedia, the Halo wiki

Dive Bomber

Dive Bomber is an achievement in Halo: Reach multiplayer matchmaking added with the Anniversary Map Pack. It was unlocked by meleeing and killing an enemy from behind while using the jetpack during matchmaking.[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]