You Are The Weapon

You Are The Weapon is an achievement in Halo: The Master Chief Collection. It is unlocked by killing a Hunter with a single round from an M6D magnum. The achievement is worth 5 gamerpoints and can be unlocked on any difficulty.

Trivia
The name of the achievement may be a reference and response to John-117's quote in the opening cutscene of Cairo Station: "I need a weapon."