Covenant Apocalypse and Starship weaponry
The weapons mounted on Covenant Starships and Apocalypse-Walkers are both devastating to both Enemy Starships and a Planets Eco-system, causing immense kinetic and thermal damage and causing massive nuclear winters, in some cases entire planets are reduced into molten glass, with all life wiped out.
Direct Energy Ultra-Heavy/Anti-Aircraft
These massive Plasma Weapons can only be seated on Gun Batteries or Scarabs and the likes. They are meant to shoot down enemy Aircraft, but can be re-purposed to destroy any Land Units/Vehicles short of a Titan if pleased.
Direct Energy Ultra-Heavy/Beam
Mounted on only Scarabs and other Super-Heavy Walkers, instead on the usual 'Bolts' these weapons shoot out concentrated beams of Plasma that instantly vaporize and cut through almost all types of materials. When shot against other Super-Heavies or Titans, the beams slice through their armor like a Plasma Torch through Steel, just like what it was intended.
Direct Energy Starship/Torpedo
The Largest and most Powerful of them all, only mounted on massive Starships. The Covenant mainly use them for ship-to-ship battle but can be also used for orbital bombardment, where the damage on the ground is absolutely catastrophic.