343 Industries has revealed four new armor sets for Halo 5: Guardians that can only be unlocked by earning special achievements in Halo: The Master Chief Collection.
Once unlocked, these will be available for use in the upcoming Halo 5: Guardians multiplayer beta later this year, as well as in the final game scheduled for a release next year.
Note that the concept below is still “early high-res armor development” and that the “Materials [are] not representative of final in-game model.” If they don’t look more scarred now they will in the game and overall, this is just to give you an idea. The final models will be better, the developer has assured.
MARK VI [GEN1]
Technically obsolete, the Mark VI [GEN1] Mjolnir armor maintains a legendary luster among Spartans and the general public.
How to unlock: Earn the “Your Journey Begins” Achievement in MCC (Unlocks Helmet & Armor)
MARK VI [GEN1] SCARRED
The Mark VI was able to remain functional until all of its triply-redundant auto-repair and bypass nodes failed.
How to unlock: Earn the “Cairo Stations” Achievement in MCC (Unlocks Helmet & Armor)
The HELIOSKRILL is a work of art crafted by a Sangheili prodigy inspired to test her skill against the best that humanity could muster.
How to unlock: Earn the “Legend” Achievement in MCC (Unlocks Helmet & Armor)
Spartans with Marine experience prefer NIGHTFALL armor when stationed on inhospitable worlds, due to its best-of-class life support.
How to unlock: Watch the Halo: Nightfall Episode 1 Second Story (Unlocks Helmet) / Watch all 5 episodes of Halo: Nightfall (Unlocks Armor).