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