DEADEYE-class Mjolnir

The MJOLNIR Powered Assault Armor/Deadeye is a helmet for the MJOLNIR GEN2 utilized by SPARTAN-IV supersoldiers.

Development history
The MJOLNIR/Deadeye variant was manufactured by Hannibal Weapon Systems. Deadeye can be optimized for extreme long-range target purging. It was originally tested in the ship graveyards orbiting Tribute's northern pole, and was designed for use by experienced Spartan marksmen. During the testing the Spartans were placed in zero-gravity to affect long-range combat against exoatmospheric drones hidden among the wreckage.

At some point in 2558, Spartan Kojo Agu tested another Deadeye prototype during a counter-piracy operation on Concord.

Halo 4
Unlock: The helmet was a pre-order bonus through Best Buy or Play.Com. It is also available in the Halo 4 Game of the Year Edition.
 * Description: Originally tested in the ship graveyards hanging above Tribute's north pole.

Halo 5: Guardians
Unlock: Ultra Rare REQ pack
 * Description: Every DEADEYE helmet incorporates a small piece of alloy from one of the ships now resting in the wreckage above Tribute's poles.

Trivia

 * In Halo 4, Deadeye is one of four helmet-only armor sets alongside the Locus, Scanner, and Strider helmets.
 * In Halo 5: Guardians, the Deadeye body is the same as the FOTUS armor.

List of appearances

 * Halo 4
 * Halo 5: Guardians