Diablo IV Season 10 – Infernal Chaos Complete Guide

September 23, 2025

Season 10 of Diablo IV has arrived, and Blizzard has titled it Infernal Chaos. Diablo IV Season 9: Sins of the Horadrim ends, and the new season begins on September 23, 2025, and it is one of the most transformative updates since launch. Players are diving into Sanctuary once again with new mechanics, reworked endgame content, and a storyline that reshapes the seasonal experience.

Chaos Armor and Perks

Infernal Chaos is set to run through the end of 2025, giving players a solid three months to push through the new mechanics and rewards. With the Public Test Realm having wrapped up in late August, Blizzard has had time to fine-tune the new systems and address community feedback before launch.

The biggest innovation this season is Chaos Armor. Unlike traditional Uniques, Chaos items can appear in unexpected gear slots, opening the door for completely new builds. This flexibility is paired with Chaos Perks, a system of temporary seasonal powers that can dramatically alter gameplay. Together, these features ensure that no two characters play exactly the same and that experimentation is rewarded. Read our Diablo IV Infernal Chaos Powers Guide for more information about Infernal Chaos Perks and Powers.

Revamped Infernal Hordes

Endgame content is being shaken up with a complete Infernal Hordes overhaul. New enemy types flood Sanctuary through spontaneous Chaos Rifts, and the mode's pacing has been redesigned to feel less repetitive. The highlight is the arrival of Bartuc, the Warlord of Blood, a new endgame boss who anchors the chaos with his own brutal mechanics. These changes are not temporary; the new Infernal Hordes design, along with Bartuc, will remain as a permanent feature beyond Season 10.

Blizzard has made it clear which features are here to stay. The removal of old boss invulnerability phases is permanent, replaced by shield-based mechanics that keep fights challenging but fair. The Infernal Hordes rework and Bartuc are also part of the permanent roster. On the seasonal side, Chaos Armor, Chaos Perks, Chaos Rifts, and the Viz-Jaq'taar reputation grind will disappear when Season 10 concludes, making them a unique experience for this chapter only.

Loot and Seasonal Rewards

Itemization continues to evolve with Season 10. The addition of Chaos Uniques adds variety to drops, and Torment difficulties now offer increased chances for high-end loot. Because Chaos Armor can roll across different gear slots, long-established build limitations are being broken, and players are encouraged to rethink how they approach their characters.

The Reliquary Battle Pass returns, themed to match the chaotic energy of the season. Players can expect a fresh set of cosmetic rewards, along with progression goals tied into the new mechanics. Seasonal Blessings and updated Journey tasks give players reasons to keep pushing through the chaos.

Story and Reputation

Every Diablo season carries its own narrative, and Infernal Chaos tells the story of the Viz-Jaq'taar, an ancient order battling the forces unleashed across Sanctuary. This questline ties directly into the new reputation system, rewarding players with seasonal bonuses and cosmetic flair as they climb the ranks.

Is it worth yoru time?

Season 10 marks a turning point for Diablo IV. By blending temporary, experimental features with permanent quality-of-life updates, Blizzard has managed to deliver a season that feels both fresh and lasting. Chaos Armor and Perks shake up builds, Bartuc and the Infernal Hordes bring new endgame challenges, and the Viz-Jaq'taar storyline adds flavor to the grind. Whether you are a dedicated Sanctuary veteran or a returning adventurer, Infernal Chaos offers plenty of reasons to dive back into the world of Diablo IV.

Diablo IV Season 10: Infernal Chaos Class Guides

Chaos Powers shape the identity of Season 10, but their true strength comes from how they merge with each class toolkit. Explore our class guides to see how these seasonal perks unlock fresh strategies and builds.