Requiescat in Pace

Requiescat in Pace is an achievement in Halo: The Master Chief Collection. It is awarded by completing 10 assassinations on enemy players in Halo: Reach.

Trivia
The achievement's name is a reference to the Ubisoft assassin game Assassin's Creed 2, in which the main character Ezio states this line after killing those deserved of death.