Vidmaster Challenge: Endure
From Halopedia, the Halo wiki
Vidmaster Achievement: Endure is an achievement in Halo 3: ODST and one of the Vidmaster Challenges. It is unlocked when you play on Firefight, on any mission, and pass the 4th set on 4 player Heroic co-op Live. It is worth 25 Gamerpoints.[1]
Sources
