Requisition system

The Requisition system (REQ system) is a feature that allows players to unlock certain rewards which can alter cosmetics and gameplay within Halo 5: Guardians multiplayer. Players earn REQ Points after each match of Arena or Warzone multiplayer. These points can then be used to purchase REQ Packs, which contain various requisitions: unlockable weapons, vehicles, armors, skins, assassination animations, stances, and other items. REQ Packs are also earned by advancing to a higher Spartan Rank and completing Commendations. Although REQ Packs are earned in both Arena and Warzone multiplayer, only cosmetic items are usable in Arena to maintain balanced competitive play. Gameplay-affecting requisitions (such as weapons and vehicles) are, however, usable in Warzone. The requisitions available to the player are governed and balanced by Warzone's REQ Level and Energy systems, which are in turn dependent on player and team performance. New REQ content will continue to be released following the game's launch. REQ packs can also be purchased with real-world currency. The different tiers of packs include Bronze, Silver, Gold, and Premium with the level determining the quality of REQs inside. A Gold REQ Pack has a chance of including Legendary requisitions, while a Bronze REQ Pack does not.

REQ Cards
There are two types of cards. Permanent or Single use
 * Permanent REQ cards are cards that can be used an unlimited amount of times, such items include: Loadout Weapons, Helmets, Armor, Emblems, visors, Player stances, assassinations, armor mods, certifications, and weapon skins.
 * Single use REQ cards are cards that can only be used once. Such as Power Weapons, vehicles, powerups, and boosts.

There are 6 levels of Rarity. Common, Uncommon, Rare, Ultra-rare, Legendary, and the Legendary sub-class Mythic.

There are 7 types of items you can get out of REQ packs exclusive to Warzone.
 * Loadout Weapons
 * Power Weapons
 * Vehicles
 * Power Ups
 * Armor Mods
 * Certifications
 * Random Weapon/Vehicle

There are 8 types of REQ cards you can use in both Warzone and Arena. These are mostly items that have zero effect in Multiplayer.
 * Weapon Skins
 * Assassinations
 * Stances
 * Boosts
 * Armor
 * Helmets
 * Visors
 * Emblems

Requisition Packs Types
There are numerous different types of REQ Packs in Halo 5.
 * Bronze: Bronze REQ Packs include Common, single use REQs, but are likely to unlock a new permanent REQ, if available.
 * Silver: Silver REQ Packs include Uncommon to Rare REQs with the added value of two new permanent REQs, if available.
 * Gold: Gold REQ Packs contain a large number of REQs ranging from Uncommon to Legendary. Players are guaranteed two new permanent REQs, if available.
 * Spartan Rank: Spartan Rank REQ Packs are rewarded to players as they increase their Spartan Rank though the experience earned in the Arena and Warzone modes. As a player's Rank increases so does the value of the REQ Pack rewarded.
 * Commendation: Commendation REQ Packs are rewarded to players so they complete specific challenges while playing in either Warzone or Arena multiplayer modes. These packs grant players with emblems and single-use REQs.
 * Featured: Featured REQ Packs will occasionally be available in the REQ Store, offering players a unique value for a limited time.
 * Premium/Warzone REQ Bundle: Premium REQ Packs provide players with a larger number of REQs with an increased chance at receiving higher levels of rarity and more permanent REQs, if available. They are amongst the highest-value packs players can earn in the system when available.
 * Supply: Supply REQ Packs can be obtained by purchasing select Halo licensed products at Retail and are offered in three levels; Basic, Intermediate, and Advanced.
 * Promotional: Promotional REQ Packs are available though various promotions, often containing pre-determined rewards, such as those pre-ordering Halo 5: Guardians, with two variants: Promotional and Advanced Promotional.

Acquiring
Players can acquire REQ packs through the following procedures:
 * Through the Halo 5: Guardians points system or by buying with real-world currency through the game.
 * By purchasing the Halo 5: Guardians digital, limited, limited collectors, or console edition.
 * By pre-ordering Halo 5: Guardians from select retailers.
 * By purchasing the Halo 5: Guardians controllers.
 * By purchasing Astro Halo 5: Guardians headset.
 * By purchasing the Halo 5: Guardians Official Game Guide Collectors Edition
 * By purchasing McFarlane's Halo 5: Guardians Figures Series 1 and 2.
 * By purchasing select MegaBloks sets
 * By purchasing Halo: Last Light.

Promotional REQ Cards
These are the items in the Promotional REQ packs. As they have pre-determined items in them. All of these items can be unlocked normally in REQ Packs(bar the Console Edition Emblem)
 * Console Edition: MJOLNIR FOTUS Armor + Exclusive Emblem
 * Gamestop Pre-order: MJOLNIR Hunter Armor
 * Gamestop Pre-order: Sentinel BR85HB variant, and Bloodthirst skin
 * Amazon Pre-order: Projection SMG with Long Barrel variant, and Potence skin
 * Best Buy Pre-Order: Longshot Assault Rifle with Recoil Compensator, and Steel skin
 * Microsoft Store Pre-order: Recon Assault Rifle with Energy Bayonet, and Lagrange Skin.
 * Master Chief Controller: Dauntless visor
 * Locke Controller: Resolute visor
 * Unknown: Recon DMR with Silencer variant, and Clash skin

Unlockable content
This is a list of all the known REQ cards classed under their rarity.