Legendary variant weapons

This article is about special weapon variants in Halo Infinite. For variants in Halo 5: Guardians' campaign, see Special weapons (Halo 5: Guardians).

A Marine holding the special Longshot variant of the MA40 assault rifle.

Special weapons are variant weapons that can be unlocked in the campaign of Halo Infinite by performing various tasks. They can be broadly divided into two categories; boss and firebase weapons - alien weapons acquired by defeating High Value Targets and human weapons that can be unlocked by acquiring Valor and requisitioning them at Forward Operating Bases.

Outside of their campaign use, special weapons can be used in the game's multiplayer as part of custom game settings and Forge placement.

Boss weapons

Special Banished and Forerunner weapons can be acquired by defeating High Value Targets and bosses during the campaign. The sole exception is the M41 Tracker, a human rocket launcher wielded by one of the bosses.

Most boss weapons can be spawned at a Forward Operating Base once their respective boss is killed.

Weapon	Unlock requirement	Notes
Backdraft Cindershot	Defeat Myriad	Modified firing core with a three-phase sequential detonation.
Calcine Disruptor	Defeat Bipbap, the Vanquisher	Modified with delayed detonation rounds.
Bloodblade	Defeat Jega 'Rdomnai	Energy Sword variant belonging to Jega.
Duelist Energy Sword	Defeat Okro 'Vagaduun	Lightweight frame allows for increased agility.
Escharum's Axe	Defeat Escharum	Escharum's custom Gravity Hammer that bestows additional mobility.
Rushdown Hammer	Defeat En'Geddon	Upgraded gravitic core and composite materials increase effective range and user mobility.
Scatterbound Heatwave	Defeat Ordo 'Mal	Fires modified and repurposed Z-180 rounds which seek targets after a ricochet.
Riven Mangler	Defeat Balkarus	Fires a split-shard projectile at a low rate of fire.
Pinpoint Needler	Defeat Writh Kul	Modified Needler with advanced target acquisition and lower supercombine requirement.
Unbound Plasma Pistol	Defeat Briglard	Bolts detonate when super-combined on target; over-charge increases detonation and tracking.
Rapidfire Pulse Carbine	Defeat Inka 'Saham	Precision Pulse Carbine with a rapid burst interval firing mechanism.
Ravager Rebound	Defeat Arthoc	Modified Ravager that fires bouncing projectiles with multiple secondary detonations.
M41 Tracker	Defeat Zeretus	Modified M41 SPNKr with increased lock-on capability.
Arcane Sentinel Beam	Defeat Thav 'Sebarim	Undocumented Sentinel Beam that offers lower capacity but extremely increased damage.
Purging Shock Rifle	Defeat Skimmer Alpha	High-damage Shock Rifle with improved voltaic chaining but with detonation capability.
Volatile Skewer	Defeat Ik'novus	Skewer refitted to fire an explosive spike that detonates on impact.
Stalker Rifle Ultra	Defeat Barroth	Covenant-sourced Stalker Rifle with increased rate of fire but reduced and heat and damage output.

Firebase weapons

These human weapons can be requisitioned for use at any Forward Operating Base once the player has earned the requisite amount of Valor points.

Weapon	Unlock requirement	Notes
Striker Sidekick	2,200 Valor	Precision Mk50 Sidekick modified for improved stopping power.
MA40 Longshot	2,300 Valor	Precision MA40 with improved long-range performance.
Convergence Bulldog	2,400 Valor	High-capacity magazine with tighter projectile spread and improved range.
Impact Commando	2,700 Valor	High-capacity magazine with reduced accuracy but increased damage.
BR75 Breacher	2,800 Valor	Improved stopping power tuned for close-range encounters.
S7 Flexfire Sniper	2,900 Valor	Experimental high-capacity S7 Sniper rifle, designed for a focus on mid-range encounters.
Pursuit Hydra	3,000 Valor	Increased long-range proficiency with faster target lock and improved rocket velocity.