Collect 3,000 campaign or playlist medals. - Halo: The Master Chief Collection
Halo CE: Complete The Silent Cartographer. - Halo: The Master Chief Collection
Kill a 343 developer in matchmaking or someone who has this achievement. - Halo: The Master Chief Collection
749/25,475420/7,00043/700
154/2,539120/1,0006/44
773/2,181605/1,25033/58