Diablo 4 Season 10: Infernal Chaos - Everything You Need to Know

Season 10 Release Information

Diablo 4 Season 10, titled Infernal Chaos, officially launched on September 23, 2025, at 10:00 AM PST . This season continues Blizzard's pattern of delivering fresh content and significant meta-shaking changes to the game, serving as the final season before the anticipated Vessel of Hatred expansion in 2026. Players can dive into the new content immediately by creating a new seasonal character or rejuvenating an existing one.

Shortly after the launch, Blizzard deployed a hotfix to address an issue with Legendary item drop rates. The fix targeted a problem where Legendaries were dropping too frequently at lower levels but were surprisingly scarce in higher-world tiers and endgame activities. This adjustment ensures a more balanced and rewarding loot progression throughout a player's journey to level 100.

New Chaos Perks System

Season 10 introduces Chaos Perks, a new seasonal power system that replaces the traditional seasonal mechanics. These perks are designed to fundamentally alter how your skills function, offering powerful bonuses with often a unique drawback, creating a compelling risk-versus-reward dynamic.

How Chaos Perks Work

Each character can equip a total of four Chaos Perks :

• 3 Non-Unique Perks: A combination of Magic, Rare, or Legendary rarities.
• 1 Unique Perk: The most powerful and transformative perk, unlocked only after defeating the new boss, Bartuc, on Torment I or higher.

Perks are unlocked by progressing through the seasonal reputation track. The system includes a pool of general perks available to all classes, plus four class-exclusive perks tailored to each class's mechanics, such as the Necromancer's "Defiled Dead" which allows each corpse to be consumed twice.

Upgrading these perks requires Infernal Warps, a seasonal currency earned by engaging with Chaos Rifts during Helltides or in Nightmare Dungeons, and the revamped Infernal Hordes activity.

Chaos Armor: Powerful New Uniques

A headline feature of Season 10 is the introduction of Chaos Armor (also known as Chaos Uniques). These are super-powered versions of existing Unique items that can drop in different armor slots than their original versions, dramatically opening up new build possibilities.

Key Properties of Chaos Armor

• Slot-Swapping: A Chaos version of a Unique will never drop in its original slot. For example, the famous boot Unique Flickerstep could appear as Chaos gloves or chest armor. 
• Enhanced Power: The unique power on these items is always rolled at its maximum value and is approximately 20% stronger than the standard version.
• Guaranteed Greater Affix: Every Chaos Armor piece comes with at least one Greater Affix (marked with a star icon), providing a significant stat boost.
• Max Item Power: These items always drop at the maximum possible Item Power.
• Visual Identification: They are easily identifiable by their distinctive blue-green drop beam and a "(Chaos)" tag in the item name.

Chaos Armor can only be found for the five primary armor slots: Helm, Chest, Gloves, Pants, and Boots. Weapons and jewelry are excluded from this system. Furthermore, players cannot equip both the standard and the Chaos version of the same Unique item, preventing power double-dipping.

Major Gameplay Changes & QoL Improvements

Season 10 brings several impactful changes that improve the core Diablo 4 experience for all players.

Necromancer Minion Resurrection

In a long-awaited quality-of-life improvement, Necromancer minions will now automatically be resummoned upon player resurrection. This change eliminates the frustrating downtime previously required to manually resummon an entire army after dying, especially during boss fights where corpses were scarce.

Boss Immunity Phase Overhaul

The often-criticized boss immunity phases have been reworked. Instead of becoming completely invulnerable, bosses now gain a shield that players can break through with sufficient damage, allowing powerful endgame characters to push their limits.

Infernal Hordes Reborn & New Boss

The wave-based endgame activity, Infernal Hordes, has received a significant revamp. A new Fleeting Hordes difficulty tier has been added, featuring a shorter format with a maximum of 4 waves, providing a more accessible entry point.

After clearing the final wave, players are presented with a choice: face the standard final encounter, The Council, or challenge a new boss, Bartuc, the Lord of Chaos. Choosing to fight Bartuc requires all party members to contribute 666 Aether . Defeating him is the key to unlocking the powerful Unique Chaos Perks for your character.

Season Journey & Rewards

Completing the Seasonal Journey remains the primary way to unlock rewards and progress your character. For Season 10, the final reward for completing the Champion tier (Chapter 6) is a new companion: Pandora the Fox. As with recent seasons, players only need to complete 5 out of 6 objectives in the final chapter to claim this reward.

The season also introduces six new class-exclusive Unique items, one for each class, further expanding build diversity. These new items, combined with the Chaos Armor and Chaos Perks systems, make Season 10 one of the most diverse and experimental seasons to date.

Conclusion

Diablo 4 Season 10: Infernal Chaos delivers a compelling package of transformative new systems like Chaos Perks and Chaos Armor, alongside meaningful quality-of-life improvements. By empowering players to experiment with high-risk, high-reward builds and breaking conventional gearing rules, the season fosters a fresh and dynamic meta. With these changes and the continued refinement of endgame activities, Season 10 sets a strong precedent for the future of Diablo 4 as it approaches its next major expansion.