I really like the Nightfall armour in Halo: 5, but is it a dedicated spartan mjolnir set, or a repurposed/modified armour set? It looks very different in comparison to other spartan sets and seems as though it shouldn’t be spartan armour in the traditional sense.
It’s similar to ODST armor that has been repurposed to function as Mjolnir.
From halopedia:
“The Nightfall armor is a hostile environment variant of the ODST armor developed by Cascade Stronghold Technology.[2] A variant of the armor designed for the MJOLNIR [GEN2]platform is available for use by Spartans”
There are technically two variants, one for ODST and a MJOLNIR variant for Spartans.