Refuge is an Achievement for Halo 3 on the Xbox 360.
It is obtained when one finishes the campaign mission The Ark on the Normal, Heroic, or Legendary difficulties, and gives 30 Gamerpoints to the player.
It is represented by a blue plate with a Roman numeral VI on it.
It also unlocks the EVA shoulder piece armor permutation.
Note: You must complete the level completely through from Mission Start.