Energy Sword
The Type-1 Energy Weapon/Sword consists of a curved hilt, housing an energy storage module and a device for projecting the plasma which forms the blade. The actual blade is composed of two partially ionized 'blades' of free moving electron based gas held in a blade-like form by two small magnetic-field generators built into the handle of the weapon. This forms and contains the oval shaped, ionized blades for which the weapon is recognized. The battery's energy is reduced for each successful strike. Each killing strike from the sword will drain the battery by 10% of its energy. Once the battery power is fully depleted, the sword will deactivate unless recharged, which is impossible in the games.
Gravity Hammer
The Type-2 Energy Weapon/Hammer is a large hammer that serves as an excellent and powerful melee weapon in the game. It is a highly symbolic Jiralhanae weapon that is analogous to the Sangheili 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. This weapon consists of a shaft, head, and blade. A field generator, which is located in the head, emits a kinetic pulse (~4.5 meters). The exact mechanism by which it functions is currently under investigation by the UNSC.
Beam Rifle
The Particle Beam Rifle is a battery-powered, directed-energy weapon that fires ionized particles at its targets instead of accelerating small projectiles. The weapon is nearly silent, gives off a negligible muzzle report, weighs considerably less than its UNSC analog and inflicts wounds akin to the 14.5mm SRS 99 AM making it, by all assessments, a potent force multiplier. The use of particle acceleration offers the distinct advantage of superior penetration, as the beam will always pass through a target completely, even through cover. Although the size of the wounds inflicted on a target are small, the damage done is similar to most directed energy weapons used by the Covenant.
Plasma Caster
The Plasma Caster fires balls of plasma that can bind to targets and detonate but bounce off other surfaces. The weapon can fire either several regular rounds, which arc slightly, or deploy its side panels and fire a single charged shot which has a larger explosion than the regular shots and has a longer range. When fired in smart-link the shots will stick to enemies, and when hip-fired the shots will bounce.
Plasma Pistol
The Plasma Pistol is a Covenant Directed Energy Weapon reverse engineered from Forerunner technology that uses a weaponized variant of the fourth stage of matter Plasma to serve as a worthy weapon on the battlefield. The weapon is powered by a battery cell. The weapon has a power output of 100–150 kV at 0.2–0.3 A (20–45 kW), but when overcharged, the power output is 1.5 MV at 0.2–0.3 A (300–450 kW)
Storm Rifle
The T-55 Directed Energy Rifle/Advanced, or Storm Rifle, is the evolution of the standard Plasma Rifle and served various infantry during the violent Sangheili civil conflicts that followed the Human-Covenant war. The weapon now includes a modular coil set, a high-mounted cooling shroud, and an extended barrel, all contributing to greater overall performance in the field than its predecessor.
Needler
The Needler is one of the few Covenant weapons which isn't based off reverse-engineered Forerunner technology. The Needler's top plate has holes which the needles protrude out of. When the trigger is pulled, the needle is fed from the top into the barrel and fired. The needles home into their target and impale it. Several seconds afterwards, the needles detonate. A single needle detonation does not cause significant damage, but if enough needles make it into the target at once, the needles will supercombine, synchronizing their explosions for massive damage
Covenant Carbine
The T-57 Carbine is a recoil-operated, semi-automatic, charger-fed marksman rifle capable of firing ballistic rounds at significant range. It is somewhat unique among Covenant weapons in that it is not dependent on superheated plasma or other energy-based material, but rather fires reactive ballistic projectiles.
Plasma Turret
The Type-58 Directed Energy Support Weapon, more commonly known as the plasma cannon, is a heavy weapon featured in Halo 5: Guardians. It was employed by the Covenant Remnant in conflicts after the Requiem Campaign.
Fuel Rod Cannon
The Fuel Rod Gun is a man-portable version of the cannon that is mounted on Covenant vehicles; it is a support weapon that is commonly employed in both anti-personnel and anti-vehicle roles. It appears to be recoil-operated and fires 3.8 cm explosive ballistic incendiary gel projectiles that travel to the target in a parabolic arc.