List of Halo 5: Guardians commendations/Weapon

Loadout Weapon Mastery
Complete all loadout weapon commendations Reward: 2000 XP + 1 Requisition Pack

Covenant Power Weapon Mastery
Master all Covenant power weapons Reward: 2000 XP + 1 Requisition Pack

UNSC Power Weapon Mastery
Master all UNSC power weapons Reward: 2000 XP + 1 Requisition Pack

Grenade Mastery
Master all grenade commendations Reward: 2000 XP + 1 Requisition Pack

Forerunner Power Weapon Mastery
Master all Forerunner power weapons Reward: 2000 XP + 1 Requisition Pack

Weapon Mastery
Master all weapons Reward: 5000 XP + 1 Requisition Pack

Magnum
Kill an enemy Spartan with the Magnum

Loadout Assault Rifle
Kill an enemy Spartan with the Assault Rifle

Loadout Battle Rifle
Kill an enemy Spartan with the Battle Rifle

Loadout SMG
Kill an enemy Spartan with the SMG

Loadout DMR
Kill an enemy Spartan with the DMR

Frag Grenade
Kill an enemy Spartan with the Frag Grenade

Plasma Grenade
Kill an enemy Spartan with the Plasma Grenade

Splinter Grenade
Kill an enemy Spartan with the Splinter Grenade

Fuel Rod Cannon
Kill an enemy Spartan with the Fuel Rod

Needler
Kill an enemy Spartan with the Needler

Storm Rifle
Kill an enemy Spartan with the Storm Rifle

Carbine
Kill an enemy Spartan with the Carbine

Energy Sword
Kill an enemy Spartan with an Energy Sword

Plasma Caster
Kill an enemy Spartan with the Plasma Caster

Beam Rifle
Kill an enemy Spartan with the Beam Rifle

Boltshot
Kill an enemy Spartan with the Boltshot

Suppressor
Kill an enemy Spartan with the Suppressor

Light Rifle
Kill an enemy Spartan with the Light Rifle

Scattershot
Kill an enemy Spartan with the Scattershot

Incineration Cannon
Kill an enemy Spartan with the Incineration Cannon

Binary Rifle
Kill an enemy Spartan with the Binary Rifle

SAW
Kill an enemy Spartan with the SAW

Railgun
Kill an enemy Spartan with the Railgun

Hydra Launcher
Kill an enemy Spartan with the Hyrda Launcher

Rocket Launcher
Kill an enemy Spartan with the Rocket Launcher

Spartan Laser
Kill an enemy Spartan with the Spartan Laser

Shotgun
Kill an enemy Spartan with the Shotgun

Sniper Rifle
Kill an enemy Spartan with the Sniper Rifle

SPNKr
Kill an enemy Spartan with the SPNKr Note: The SPNKr commendation is not required for UNSC Power Weapon Mastery