The HELIOSKRILL is a work of art crafted by a Sangheili prodigy inspired to test her skill against the best that humanity could muster.
Mjolnir Powered Assault Armor/Helioskrill is a variant of Mjolnir [GEN2] used by SPARTAN-IVs.
Halo 5: Guardians Multiplayer Beta Edit
The armor can be unlocked by unlocking the Legend achievement in the Halo: The Master Chief Collection.
Halo 5: Guardians Edit
Helioskrill is unlocked by unlocking the Legend achievement in Halo: The Master Chief Collection or by opening a gold REQ pack.
An early render of the armor.