Data Hive (achievement)
From Halopedia, the Halo wiki
Data Hive
Data Hive is an Achievement in Halo 3: ODST awarded when the player has completed the Template:Levelname level in Campaign Mode on at least normal difficulty and unlocks the Chasm Ten Firefight map. It is worth 50 Gamerpoints.[1]
It is represented by an olive circle, with the Marathon symbol imprinted in it, with a picture of a Drone on it.
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