15.1|Oct 8, 2026
View on Steam↗Hotfix 15.1 Patch Notes
3/5 Moderate
Massive damage buffs for the One Handed Thunder Hammer and significant range and ammo adjustments for Melta Rifles.
Key Changes
- 1One Handed Thunder Hammer Underhand and Echoing Swing damage increased by up to 100%
- 2Added a small invulnerability window when rising from knockback to improve survivability
- 3Melta Rifle and Heavy Melta Rifle range fall-off and ammo pools significantly adjusted
- 4PvP ability recharge rates fixed after previously recharging twice as fast as intended
- 5Hellbrute melee damage in Chaos Siege reduced by 30%
- 6Fixed customization issues preventing hoods and robes from being recoloured
- 7Pandemonium Penance value increased to 25% and spawn bugs resolved
- 8Fixed relics and Geneseeds spawning outside of the playable map area
All Changes
⚔️Weapons(27)
- buffOne Handed Thunder Hammer: Base damage increased by 10%
- removeOne Handed Thunder Hammer: Temporarily removed forced stagger from charging stances to prevent spamming
- buffOne Handed Thunder Hammer: Underhand Swing damage increased by 67%
- buffOne Handed Thunder Hammer: Echoing Swing waves damage increased by 100%
- buffOne Handed Thunder Hammer: Energised Strike damage increased by 100% and damage radius increased by 50%
- changeOne Handed Thunder Hammer: Improved controls responsiveness after Energised Strikes
- buffOne Handed Thunder Hammer: Charged attacks damage increased by 25% with greatly improved cleave
- buffOne Handed Thunder Hammer: Charge Overflow perk duration increased to 20 seconds
- buffOne Handed Thunder Hammer: Rapid Recharge perk cooldown decreased to 15 seconds
- buffOne Handed Thunder Hammer: Deflective Charge perk cooldown decreased to 20 seconds
- fixOne Handed Thunder Hammer: Fixed Reverberating Slam second hit damage and perk scaling
- buffOne Handed Thunder Hammer: Perfect Reprisal now affects all Light Attacks for 7 seconds instead of just the first one
- nerfOne Handed Thunder Hammer: Preparedness and Brutal Reforge now only trigger on hammer kills rather than just having it equipped
- buffHeroic One Handed Thunder Hammer: Power Maul damage bonus for each charge increased to 30%
- nerfMelta Rifle: Standard and non-range versions damage fall-off start point reduced from 5m to 3m
- buffMelta Rifle: Default max ammo pool increased from 10 to 12
- buffMelta Rifle: Default magazine size increased from 5 to 6
- buffMelta Rifle: Master-Crafted Beta, Drogos Reclamation Alpha, and Ophelian Liberation Alpha ammo/mag size increased by 1
- buffMelta Rifle: Master-Crafted Alpha damage fall-off start point increased from 2.5m to 5m
- buffMelta Rifle: Salvation of Bakka damage fall-off start point increased from 3m to 5m
- buffMelta Rifle: Gathalamor Crusade damage fall-off start point increased from 3.5m to 5m
- buffHeavy Melta Rifle: Standard and non-range versions damage fall-off start point increased from 2m to 3m
- buffHeavy Melta Rifle: Master-Crafted Alpha damage fall-off start point increased from 3m to 6m
- buffHeavy Melta Rifle: Salvation of Bakka damage fall-off start point increased from 4m to 6m
- buffHeavy Melta Rifle: Gathalamor Crusade damage fall-off start point increased from 5m to 6m
- fixHeroic Bolt Rifle: Fixed Heroic Bolt Rifle Melta shot damage discrepancy when using Tactical Reserve perk
- fixHeroic Melta-rifle: Fixed Elusive Fire perk not working with Heroic Melta-rifle
🎮Gameplay(4)
- buffPlayer: Added a small invulnerability window when rising from a knockback
- fixPickups: Fixed relics and Geneseeds spawning outside of playable areas
- fixAuspex Scan: Restored Auspex Scan behavior to patch 14.2, removing unintended default Gunstrike damage buff
- fixCampaign: Fixed a bug where players could spawn without the Thunder Hammer in the Dawn's Descent mission
🏆Crucible(8)
- fixCrucible: Fixed Operations difficulty settings affecting Crucible Mode
- newCrucible: Added notification when too few penances are selected
- fixGuardian Glyph: Fixed Guardian Glyph Penance failing to revive players with Curse of the Warp
- buffPandemonium Penance: Pandemonium Penance value increased from 15% to 25% and spawn rate bug fixed
- fixMadness Penance: Fixed Madness Penance not correctly increasing enraged Majoris spawns
- fixCrucible: Fixed level requirement bypass bug in the ready zone
- changeUI: Quick Match UI now displays Bonus Crucible XP and standard XP separately
- changeCorruptive Miasma: Corruptive Miasma Penance is now disabled during Heldrake and Hierophant boss sequences
🔥Chaos Siege Mode(5)
- fixChaos Siege: Fixed players taking damage from friendly chaos portals
- nerfHellbrute: Summonable Hellbrute melee damage decreased by 30%
- fixChaos Siege: Fixed weapons failing to use Chaos skins
- buffLoyalist Marines: Loyalist Marines are now more effective at killing cultists
- fixChaos Siege: Fixed unprocessed Chaos Space Marine voiceovers
🎨Customization(2)
- fixCustomization: Fixed hoods and certain robes not being recolourable
- fixCustomization: Fixed cloth customization settings not saving between restarts
🛠️General Fixes(3)
- fixPvP: PvP: Fixed abilities for all classes and Helbrute recharging twice as fast as intended
- fixPerformance: General crash fixes and stability improvements
- fixUI: Minor UI and localization fixes
Summary
Hotfix 15.1 focuses on substantial balance adjustments for PvE melee and ranged combat. The One Handed Thunder Hammer receives massive damage increases across its entire move set, while Melta Rifles see a mix of range fall-off nerfs for standard versions and buffs for specialized variants. The update also introduces a new invulnerability window after knockbacks and resolves several critical bugs in Crucible and Chaos Siege modes.