Kill 100 Elites. - Halo: The Master Chief Collection
Kill a 343 developer in matchmaking or someone who has this achievement. - Halo: The Master Chief Collection
Play a multiplayer or co-op game at least 3 months after your first game. - Halo: The Master Chief Collection
69/25,47560/7,0009/700
690/1,918430/1,00024/43
142/4,20790/2,0007/86