The Legend of 117

The Legend of 117 is an achievement in Halo 4. It is awarded when the player completes the Campaign on Legendary difficulty. The achievement is worth 70 Gamerscore. It is represented by a shield in the background, with two crossed Lightrifles and a Promethean Knight skull. Getting this achievement grants the player the full original MJOLNIR Powered Assault Armor/Mark VI suit for multiplayer.