DEADEYE-class Mjolnir

DEADEYE-class Mjolnir is a variant of MJOLNIR GEN2 manufactured by Hannibal Weapon Systems.

Specifications
The suits are tailored to Spartan snipers, fitted with emissions cloaking, heavy-duty waste recycling, and redundant rebreathers for extended combat excursions in any environment. While designed for extreme-range operations the suit still is functional in both mid and close range. Deadeye can be optimized for extreme long-range target purging for the extreme end of sniper-oriented Spartan armor. With the smart-linked VISR software with movement-distance calibration, Deadeye has been updated to assist snipers at ranges that greatly exceed traditional firing accuracy.

The helmet has an enclosed PZ-238 rebreather system. The VISR has a point-isolated, VISR focal software used for extreme-range targeting. All Deadeye helmets also have a small piece of alloy from ships resting in the wreckage above Tribute's poles.

Development history
The Deadeye variant was manufactured by Hannibal Weapon Systems. It was originally tested in Tribute's ship graveyard in 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.

Usage
Although Deadeye is rare in the field, the armor is highly regarded by its advocates.

Halo 3 MCC
In the Halo: The Master Chief Collection version of Halo 3, the Deadeye variant was added as part of Season 5 content. With the updated Halo 3 armor customization options, the players can now fit their Spartan with Deadeye helmet, chest, shoulders, forearms and legs. The description of the armor pieces are the same for every set.
 * Unlock: Unknown
 * Description: Cross-training with Sangheili rangers on Anvil Station will improve the suit's stealth capabilities.

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.

MCC descriptions

 * Helmet description: Tested in Tribute's orbital ship graveyards.

Halo 5: Guardians
Unlock: Ultra Rare REQ card
 * Helmet description: Every DEADEYE helmet incorporates a small piece of alloy from one of the ships now resting in the wreckage above Tribute's poles.
 * Body description: Tailored to the requirement of Spartan snipers, DEADEYE suits are fitted with emissions cloaking, heavy-duty waste recycling, and redundant rebreathers for extended combat excursions in any environment.

In Halo 5: Guardians due to the "Body" having a predefined customisation this armor set permanently has the following parts from Halo 4:
 * Body: FOTUS
 * Shoulders: FOTUS
 * Forearms: FOTUS
 * Legs: FOTUS

Production notes

 * The concept art for the Deadeye helmet on pre-order adverts was sketched over a render of an Air Assault helmet.

Miscellaneous

 * In Halo 4, Deadeye is one of four helmet-only armor sets alongside the Locus, Scanner, and Strider helmets.
 * In Halo 4's full body renders, and Halo: The Master Chief Collection, the Deadeye body armor is the same as the Recruit armor.
 * In Halo 5: Guardians, the Deadeye body armor is the same as the FOTUS armor.

List of appearances

 * Halo 3
 * Halo 4
 * Halo 5: Guardians