The Key

The Key is an Achievement for Halo 3 on the Xbox 360.

It is earned when one finishes the campaign mission on the Normal, Heroic, or Legendary difficulties, and gives 40 Gamerpoints to the player.

It is represented by a blue plate with a roman numeral VIII on it.

Note: You must finish the level completely through, or the achievement will not unlock.

Internal

 * Halo 3 Achievements