DOOM is done! 2nd on site! 1st in USA!
Complete any co-op level on Normal difficulty. - Halo: The Master Chief Collection
Complete any co-op level on Heroic difficulty. - Halo: The Master Chief Collection
Complete any co-op level on Legendary difficulty. - Halo: The Master Chief Collection
585/25,518260/7,00027/700
948/21,699545/4,00030/164
15/3,56915/1,0002/62