Season 04: Infection

Season 04: Infection is a fourth season of Halo Infinite, launched on June 20, 2023.

Ancillary materials

 * Halo Waypoint Story & Intel: Story and Intel released on Halo Waypoint to expand upon the characters, events, and miscellaneous details of the season.

General overview

 * 100-tier Battle pass
 * New armor
 * New canon armor core: HAZMAT
 * Additional Mark VII core cosmetics
 * Additional Yoroi cosmetics
 * New weapon models for the BR75 battle rifle, CQS48 Bulldog, MA40 assault rifle, and Mk50 Sidekick
 * New multiplayer maps:
 * Forest
 * Scarr
 * Solitude, a Forge remake of Halo 5: Guardians's Plaza
 * Dredge, a Forge remake of Halo: Reach's Countdown
 * New multiplayer mode: Infection
 * New sandbox items
 * Quantum Translocator
 * Threat Seeker
 * Five events
 * Hazmat, Containment, and Cyber Showdown II
 * Fractures: Tenrai II and Tenrai III
 * New features
 * A new Career Rank progression system
 * Forge updates: Static/Reactive Water Plane, Minigame Mode, VFX Improvements, Budget Improvements, new Universal Blockers, new Forerunner Objects
 * Various quality of life improvements
 * Premium and Store Cross-Core coatings
 * Shop UI improvements
 * Death Cam improvements
 * Improved Pelican Vehicle Drop in BTB modes
 * Extermination medal added in all multiplayer modes
 * Campaign and Multiplayer have been separated. To access campaign, you will be brought into a separate executable. 343 will no longer have to playtest the campaign while making changes to multiplayer.

XP Boosts, Challenge Swaps, and Credits

 * 19 XP Boosts
 * 42 Challenge Swaps
 * 1,000 Credits

General Customization

 * 1 Backdrop: Danger
 * 5 Nameplates: Classified, Danger Zones, Searing, Tally, Warning
 * 2 Stances: Ready & Waiting, Wristshot
 * 5 Armor Emblems: Classified, Danger Zones, Searing, Tally, Warning
 * 5 Vehicle Emblems: Classified, Danger Zones, Searing, Tally, Warning
 * 5 Weapon Emblems: Classified, Danger Zones, Searing, Tally, Warning
 * 3 Armor Coatings: Genesis Bloom, Midnight, Sage Advice
 * 3 Weapon Coatings: Citrus Wash, Industrial Preparedness, Surface Tension
 * 2 Weapon Charms: Searing, Warning
 * 1 Armor Effect: Leaky Seals
 * 1 Kill Effect: Biohazardous
 * 4 Visors: Plot Device, Singularity Foam, Spatterlime, Trained Eye
 * 11 Weapon Models: BR75 DEVLOOP, BR75 HAZCON, BR75 [HCS] AKRIVEIA, BRXX LIGHTFIRE, Crimson Dawn, Crimson Sun, CQS48 MODE MS, MA40 FLASHBLIND, MA40 MODE MS, MK50 GROOVEGRIP, MK50 SWIFTGUARD

Mark VII Core

 * 3 Helmets: Armet, Talon, Trendlock
 * 1 Helmet Attachment: CBRN/FIM-A
 * 3 Chests: UA/NERA-APS, UTIL/FLISP Mark 89, UTIL/M8 Flaregun
 * 3 Shoulder Pads: UA/Arethor, UA/FLSF Type C, UA/NERA-DAP
 * 2 Wrists: TAC/Holodyne Milspec, UTIL/Railgrip
 * 1 Kneepads: UA/Type SI
 * 1 Utility: UTIL/S-PAK

HAZMAT Core

 * 1 Armor Core: HAZMAT
 * 4 Helmets: Mark VI CBRN, Oberon, Project Corsac, Skarbnik
 * 2 Helmet Attachments: MMC Filter, Signaltech Deepeye
 * 5 Chests: Fiberweave Plate, Lifeguard Doc, Pro-Tek Extender, Techlock Safesource, Venezian Omnicorder
 * 4 Shoulder Pads: Bracepad, HITEK Shoulder Plate, Sample Pack, Threatwave SMI
 * 2 Wrists: Cor-Bit, Threatwave SPES
 * 2 Kneepads: K-Shok Dampeners, Type Kirst
 * 2 Utilities: Scantek 6300MIL, T21-HEX4
 * 1 Gloves: iMEK

Yoroi Core

 * 5 Helmets: Azechi, Hakushika, Hatamoto, Kawari, Otomosho
 * 4 Helmet Attachments: Ambition's Crown, Courtly Display, Tengu's Gift, Unshed Valor
 * 4 Chests: Heaven's Gift, Lacquered Heartwood, Thousand-Forged Plate, Twin Dragons
 * 7 Shoulder Pads: Bladed Maple, Dragonborn Noble, Heaven's Cry, Iron Tortoise, Mountain Cave, Secondary Mandate, Wave Slicer
 * 1 Wrist: Crestsworn
 * 2 Kneepads: Bladed Crescent, Sharpened Crescent
 * 5 Utilities: Bladed Guard, Graceful Leaves, Heaven's Valor, Heirloom Plate, Tomorrow's Fortune

Events
Please see the respective event pages for their Event Passes.