The Company of Strangers

The Company of Strangers is an achievement in Halo: Spartan Assault, exclusive only to the Xbox 360 and Xbox One versions. It was released along six other new achievements in December 2013. The achievement is awarded for completing a co-op mission with at least 5 different players. It is worth 10 Gamerscore on the Xbox 360 and 20 Gamerscore on the Xbox One.