Type-2 Energy Weapon/Hammer
Hand held, Two-Handed
|Damage Per Hit||
Instant death to minimal. High area-of-effect damage
100 Battery Units
Gravity shockwave/Blunt Melee Strike
|Rate of Fire||
None (Melee Only)
The Type-2 Energy Weapon/Hammer, more commonly known as the Gravity Hammer, is the mightiest and most powerful close-quarters two-handed melee weapon used by Covenant Loyalists.
The Gravity Hammer is a large hammer that serves as an excellent and powerful melee weapon in the game. It is a highly symbolic Brute weapon that is analogous to the Elite's Energy Sword. This powerful weapon can also be used to manipulate gravity, allowing it to push opponents away or pull them towards the wielder, as well as deflecting incoming projectiles.
The Gravity Hammer first appeared in Halo 2 as the personal weapon of the Brute Chieftain, Tartarus. This weapon was a symbolic representation of Tartarus' power and standing. He used it against the player and could kill with a single hit, but after his death, the weapon becomes unusable. Halo 3 introduced a newer and more utilitarian version of the Hammer that serves as a companion to the Energy Sword in the game.
The Fist of Rukt was Tartarus' personal gravity hammer, one with a rich legacy befitting his tribe. It was passed down from Chieftain to Chieftain in the Brute pack, and belonged to his uncle, Maccabeus, before Tartarus killed him in combat and claimed the legendary hammer for himself..
Gravity Hammers, like the Brutes who wield them, were never seen or mentioned in Halo: Combat Evolved. Although the Fist of Rukt makes an appearance in Halo 2, the player does not get to use them for their own purposes until Halo 3.
After the conclusion of the Battle of the Gas Mine, when the Arbiter killed the Heretic Leader, Tartarus appeared on the scene, using his Gravity Hammer to freeze 343 Guilty Spark as the Monitor began to explain to the Arbiter the things he had told Sesa 'Refumee. The Arbiter was taken aback by this brash handling of such a "holy" Oracle, but the Brute Chieftain was uninhibited by the rough treatment.
After the conclusion of the Battle of the Quarantine Zone on Installation 05, Miranda Keyes and Avery Johnson of the UNSC were able to retrieve the Sacred Icon from Delta Halo's Library. The Arbiter, however, knocked Johnson unconscious, and Tartarus once again appeared on the scene. Tartarus was able to levitate Miranda towards himself with his hammer. After securing her, he used his hammer to push the Arbiter into the deep chasm behind him.
At the Control Room of Installation 05, the Arbiter, Johnson, and numerous Elite Councilors, Zealots, Ultras and Special Operations Elites attempted to kill Tartarus and deactivate Installation 05. The Fist of Rukt was one of Tartarus's few advantages, and despite being heavily outnumbered, the massive area effect damage was able to send most of the Elites flying into oblivion, and any Sangheili that attempted to attack Tartarus at close range with Energy Swords were beaten to death by the massive Fist of Rukt. After the Arbiter and Johnson killed Tartarus, the Fist of Rukt fell from the Brute Chieftain's limp hands, leaving its final fate unknown.
The first hint of the Gravity Hammer's appearance in Halo 3 was seen in the "Starry Night" TV spot released on December 4, 2006. In the very end of the trailer (00:52), one of the Brute Chieftains that SPARTAN-117 was about to attack was carrying a Gravity Hammer. 
In the video documentary Et Tu, Brute? released December 20, 2006, there were a few animations of Brutes using Gravity Hammers, and Brutes in game play that were wielding hammers in mostly untextured alpha builds. The hammer in the video showed an almost exact resemblance to the Fist of Rukt of Halo 2. The hammers were unique in the fact that when they swung, a massive electric blue shock wave was projected in a spherical blast from the head of the hammer, mirroring a Plasma Grenade's detonation, except possibly larger and stronger. Crates and other objects in the path of the shock wave were displaced.
The Gravity Hammer is usable in Halo 3 and Halo 3: ODST. It is devastating in close quarter combat, capable of smashing vehicles away, and bouncing explosives away from the wielder of the hammer. The Gravity Hammer's attack is an instant kill on any target at point blank range (unless damage resistance or shields have been modified or if the target deflects the blow with an Energy Sword). The Hammer creates a small blue and white shock-wave that expands from the center of the hammer's head, shaking the perspective of players nearby. This is presumably the main damaging prospect of the Gravity Hammer. The Hammer also hurls targets backwards if it connects, often sending them incredibly far. In addition, rockets shot at the wielder can be knocked away if the attack is timed well. However, to make up for the power of the weapon, the battery drains slightly faster than an Energy Sword (in campaign, not multiplayer), and it has a slower swinging rate. On maps with platforms in the air, the weapon can be utilized to fling an opponent off the edge. On very rare occasions, Flood-infected Brutes have been seen wielding Gravity Hammers particularly on the level Halo. Also, on The Covenant at the Revelation chapter, when the Flood are allied with the player and the Arbiter, if you can keep a Brute enemy alive, you can sometimes cause the Infection forms to infect the dead human combat form carrying the Shotgun. Then you can exchange any weapon (including the Gravity Hammer) with the combat form by pressing the RB button. Giving a Gravity Hammer to Elite allies in Halo 3 is extremely ineffective, because neither Elite allies nor the Arbiter will swing the weapon, instead charging into battle and then standing uselessly in front of the intended opponent, likely for balancing reasons.
In Halo: Uprising, on the cover of Issue 3, John-117 is seen holding a Gravity Hammer. It is virtually identical to the one seen in Halo 3.
The Brute Chieftain leader does not appear in the Campaign, but in Skirmish matches, he uses a Gravity Hammer that is capable of both pummelling opponents and creating a small vortex of gravity that sucks in anything unwise enough to get in the way.
In Halo 3: ODST, Gravity Hammers make a return appearance, with a new melee animation, swinging the hammer forward to cosh an enemy on the head without activating the gravitational shock wave that normally applies when the head of Gravity Hammers make contact with a surface.
A Brute Chieftain appears at the end of the NMPD HQ level, which he uses the blade of the hammer to gravely injure Romeo and puncture his lung while disarming him of his Sniper Rifle, before he is killed by the remaining members of his squad (Dutch, Mickey and Buck).