This is Not Your Grave…

This is Not Your Grave... (capitalized This Is Not Your Grave in Halo: The Master Chief Collection) is an Achievement in Halo: Reach and Halo: The Master Chief Collection.

Halo: Reach
In Halo: Reach the achievement is unlocked by completing the Campaign mission The Package on Normal, Heroic or Legendary.

Halo: The Master Chief Collection
In Halo: The Master Chief Collection the achievement is unlocked by completing The Package on any difficulty. The Xbox achievement artwork is a Halo: Reach concept art of the Sabre Program Launch/Research Range facility at Farkas Lake.

Trivia

 * The name is a reference to a quote made by the Gravemind in Halo 2: "This is not your grave...but you are welcome in it."