Hammer Storm

TE4ESGTv5J8 Hammer Storm is a content update for Halo 5: Guardians, released on February 24, 2016. The update included new multiplayer maps, new game modes, weapons, Requisitions, and Forge options.

Maps

 * Torque for Arena
 * Grifball Court for Grifball
 * Ascendance skybox for Parallax

Game modes

 * Assault
 * Grifball
 * Oddball
 * Ricochet
 * Fiesta Slayer

Weapons

 * BR85N battle rifle
 * BR85N with Extended Magazine
 * BR85N with Knight blade
 * M20 SMG
 * M20 with Extended Magazine
 * M395B DMR
 * M395B with Extended Magazine
 * M395B with Knight blade
 * M6D magnum
 * M6H2 magnum
 * M6H2 with Extended Magazine
 * MA5D assault rifle
 * MA5D with Extended Magazine
 * MA5D with Knight blade
 * Type-2 gravity hammer
 * Type-55 Storm Rifle
 * Fury
 * Blissful Slumber

Weapon skins

 * Last Dawn

Armor sets

 * DECIMATOR-class Mjolnir
 * HELIOSKRILL-class Mjolnir
 * Helioskrill Bloodgorger
 * Helioskrill Warbound
 * JUMPMASTER-class Mjolnir
 * Jumpmaster Dispatcher
 * MARAUDER-class Mjolnir
 * Marauder Keres
 * Marauder Kratos
 * SHINOBI-class Mjolnir
 * Shinobi Heartless

Assassinations

 * Knee-dful Things
 * Terminal Velocity

Visors

 * Mad Dog

Emblems

 * Golden Arm
 * Grifball
 * Ducat
 * Kinetic
 * M6D
 * Rabbit
 * Spartan Helmet
 * Tartan
 * Triplicate
 * Vertigo
 * True Light

Stances

 * Hammer Time
 * Old School

Armor Mods

 * Death From Above

Tweaks

 * Color palette for armor and emblems expanded from 32 to 60 colors, although certain preexisting colors such as Teal are removed.
 * "Harmonies" (pre-set color combinations) for emblems are replaced, players can manually select the primary, secondary, and tertiary colors for their emblems as in prior Halo games.

Trivia
Despite being teased at the end of the Infinity's Armory live stream the Blue Team weapon skins were not released with Hammer Storm.
 * If you wore a color that was removed before the update happened, then your spartan defaulted to pink after the update happened.
 * The armor mod Death From Above wasn't revealed in any of the update screenshots.