Breaking Quarantine
From Halopedia, the Halo wiki
Breaking Quarantine
Breaking Quarantine is an achievement in Halo: Combat Evolved Anniversary that is awarded for escaping the Flood containment facility on the level 343 Guilty Spark in at most 21 minutes. It is worth 25 Gamerscore points.[1]
It is represented by a white outline of an analog clock with the number "21" beside it on top of a green octagon.
Trivia
- The name of the achievement is a reference to the story Breaking Quarantine in the Halo Graphic Novel.
- The requirement that player needs to escape the facility in 21 minutes is most likely a reference to Bungie's obsession with the number 7, as 21÷3=7.