Type-2 gravity hammer
The gravity hammers evolved from traditional war hammers wielded by Jiralhanae war chieftains, which were a major focus of the Jiralhanae's barbaric culture, as it serves as the ultimate symbol of clan leadership in addition to being a powerful weapon. The ceremonial hammer of a pack or a clan is only passed to another Jiralhanae if he can best his chieftain in ceremonial combat; the mantle of leadership passes along with the weapon. The wielder of the weapon was expected to treat their gravity hammer with great care.
When the Jiralhanae were incorporated into the Covenant, advanced Covenant technologies were adapted by the Jiralhanae and applied to their war hammers. After Tartarus' rise to power, many war hammers of chieftains were commissioned into the contemporary gravity hammer, with components of the ancestral hammers incorporated when possible.
Though gravity hammers used by Jiralhanae serving in the Covenant military tend to follow a standard design, not all are functionally or aesthetically identical; gravity hammers are often tailored to suit the desires of specific clans, families, or packs. The first gravity hammer and the template for the standardized weapons of this type was the Fist of Rukt, an ancestral war hammer of Maccabeus' clan which was upgraded with Covenant gravity technology after Tartarus was appointed the Chieftain of the Jiralhanae in the Covenant.
Though individual gravity hammers are crafted differently, the design of the standard Type-2 EW/H is rather simple, being composed of a long haft and a heavy head with a tungsten-alloy blade on the reverse end. Within the head is a short-range shock-field-generating gravity drive that uses gravity impellers that are often re-purposed from other technology to emit a kinetic pulse around 4.5 meters outward; this device was added to the weapon shortly after the Jiralhanae's incorporation into the Covenant in 2492. This device can displace gravity in targeted locations and manipulate localized energy fields, though the Jiralhanae's brutal nature means that they often prefer to use the weapon in melee combat. This allows the ability to pull a target towards that wielded or push it away as well as even create a vortex which pulls things in and then detonates the vortex to push things out. The exact mechanism by which it functions is currently under investigation by the UNSC.
The gravity hammer is a very powerful weapon, useful in close quarters combat. With a bit of skill, they can even be effectively used against vehicles, usually offering an instant kill. The hammer has a splash damage effect, and a well-placed hit could kill multiple foes in one swing. In some aspects, it is more powerful than the energy sword - a kill against a Covenant enemy or an opponent in multiplayer uses 10% of the energy sword's battery, whereas the gravity hammer only uses 8.33%. When timed perfectly, the gravity hammer can even be used to deflect certain objects, such as rockets and even grenades. In campaign or firefight, 5% of the hammer's battery is used per swing.
In multiplayer and skirmish mode in Halo Wars, the Brute chieftain is armed with a gravity hammer. It features very powerful vortex ability that can rip objects apart and suck them in. When the vortex grabs units such as Marines, they will be battered by the shrapnel in the vortex and by their fellow squad members, in addition to being hurled violently. When the vortex leader power is put to a halt, either by the player's choosing or by enemy forces, an explosion will send everything in the vortex outward. Upgrades to the hammer include adding a stun, pulling enemies toward him, and increasing range and damage.
Halo: Spartan Assault and Halo: Spartan Strike
Each smash from a Brute chieftain's gravity hammers can send a medium-range shockwave forward. The shockwaves are powerful enough to disable shields, making the player vulnerable to damage. Unlike the FPS games, the gravity hammer does not give a knockback effect when it hits an opponent.
Halo Wars 2
In Campaign and Skirmish, Jump pack Brutes are armed with Gravity Hammers. Jiralhanae Warlords are armed with Gravity Hammers as their primary weapon. The weapon is quite effective at dealing with Pod Infectors; however, it's best use is against structures.
Changes from Halo 3 and Halo 3: ODST to Halo: Reach
Changes from Halo: Reach to Halo 4
Changes from Halo 4 to Halo 5: Guardians
Changes from Halo Wars to Halo Wars 2
List of appearances