Campaign Complete: Normal (Halo 3: ODST achievement)
From Halopedia, the Halo wiki
Campaign Complete: Normal
Normal is an Achievement in Halo 3: ODST. It is awarded for completing the game on Normal difficulty. It is worth 100 Gamerpoints.[1] This achievement will unlock The Rookie's helmet for your Xbox Live avatar on Halo Waypoint.[2]
It is represented by the appropriate difficulty shield. Replacing the combat knife, there is an M7S SMG.
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