In Campaign we had skulls, terminals and easter eggs.
Well now I thought of something else to add to the campaign. We had achievements for Halo 3 armour, we had commendations for Halo 4… if the campaign is say 10 mission long it could the nwe could have two armour sets for it.
Collectibles in Halo 5 Campaign
Skulls - hidden skulls that after finding, give a perk or ability to change the campaign game play.
Terminals - hidden terminals that after finding, give key infromation to the story and history.
Armour Pieces - hidden armour pieces that complete a set of five which builds into your armory.
The Armour could be Mk V and MK IV classic Master Chief looks.
If a award for legendary solo is given to perhaps a unique never before seen armour that has memorable quality. (Master Chiefs new MK IV Halo 4 or Halo 5 version)
Collectibles in Halo Spartan Ops and Firefight
Armour Pieces - hidden armour pieces that complete a set of five which builds into your armoury.
Armour Sets
Thorne
Hoya
DeMarco
Madsen
Grant