Coastal Highway
Coastal Highway is an Achievement in Halo 3: ODST. It is unlocked when the player completes the Coastal Highway Mission in Campaign Mode and unlocks the map Last Exit for Firefight. It is worth 50 Gamerpoints.[1]
Sources
Coastal Highway is an Achievement in Halo 3: ODST. It is unlocked when the player completes the Coastal Highway Mission in Campaign Mode and unlocks the map Last Exit for Firefight. It is worth 50 Gamerpoints.[1]