If I remember correctly, the requirement is to have "Played 4 of the last 6 Bungie games." Bungies games are: Gnop! Operation Desert Storm Minotaur: Labyrinth of Crete Pathways Into Darkness Marathon Marathon 2: Durandal Marathon Infinity Myth: The Fallen Lords Myth II: Soulblighter Oni Halo: Combat Evolved Halo 2 Halo 3 Halo ODST Halo Reach Destiny This list excludes a couple titles that Bungie published for indie developers under their indie development program. So at the time the emblem became available, I believe that the last 6 Bungie games were: Oni Halo: CE Halo 2 Halo 3 Halo ODST Halo Reach So you would need to have played 4 of those games on your Bungie.net linked account. I may be wrong, I'm not sure if Halo Wars would count. Halo Wars was included in the Halo Waypoint app, bit is not listed as a Bingie title.