Living Legend
From Halopedia, the Halo wiki
Living Legend
Living Legend is an achievement in Halo: Combat Evolved Anniversary. It is awarded for completing the campaign on Legendary. It is worth 50 Gamerpoints. Receiving this achievement also unlocks the "Birth of a Spartan" and "Believe in a Hero" achievements if the player hasn't completed the campaign on Normal and Heroic, respectively.
It is represented by the Legendary difficulty shield, which also represents the Halo: Reach achievement "Gods Must Be Strong".
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