Double Time!

From Halopedia, the Halo wiki

Double Time! is an achievement in Halo: The Master Chief Collection. It is unlocked by beating the 25 minute par time on the level Coastal Highway. The achievement is worth 10 Gamerscore and can be unlocked on any difficulty.


The name of the achievement is a quote from the level: Buck tells Jonathan Doherty, "Follow me trooper. Double Time!""