Hi I watched the full Series of Halo Nightfall on the Halo Channel and just ulocked one emblem for Halo Master Cheaf colektion and didnt get the Nightfall armor in Halo 5
The Nightfall armor and helmet have been added to the REQ pool, so you’ll probably have to unlock it that way.
The Nightfall promotion may not be supported anymore. You can still get it through Gold Packs.