List of Halo 5: Guardians commendations/Weapon

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

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

Grenade Mastery
Master all grenade 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

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

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