Borderlands 4 Weekly Reset - Halloween Event, 7 SHiFT Codes, Patch Notes & Harlowe Skin (Oct 23, 2025)
Borderlands 4 Weekly Reset - Full Patch Notes, Halloween Event, 7 SHiFT Codes, Harlowe Skin
TL;DR: Horrors of Kairos is live from Oct 23 to Nov 6. This post includes the full Oct 23 patch notes, 7 Golden Key SHiFT codes, the Harlowe community skin reward, weekly reset activities, Maurice location, and links to our video, playlist, newsletter, Discord, and Twitch.
Seasonal Mini-Event - Horrors of Kairos
The first free seasonal mini-event is live from Oct 23 to Nov 6. World boss encounters switch to blood rain weather and award limited-time Legendaries delivered to your Reward Center:
- Murmur Legendary Tediore Assault Rifle - executes weakened enemies with guaranteed crits under 35 percent health
- Skully Legendary Order Grenade - seeks the nearest target and fires deadly projectiles
Grab the Halloween cosmetic SHiFT bundle too:
- Gourd Your Loins Vault Hunter Head - usable by Vex, Rafa, Amon, Harlowe
- Hex Appeal Weapon Skin
Halloween SHiFT Code: 3S6BB-ZXT93-KRT3W-BT3T3-JW6TZ
Weekly Activities - Oct 23 Reset
- True Boss: The Battle Wagon - tougher variant with an upgraded loot pool
- Wildcard Mission: Dark Subject - modifiers are Vampiric, Cold Hearted, Invisible
- Wildcard Legendary Reward: Kickballer - Legendary Maliwan Shotgun
- Maurice's Black Market Location: Elpis Orbital Shatterfield
7 Golden Key SHiFT Codes - Expires in 48 Hours
Redeem in game via the SHiFT menu or at shift.gearbox.com.
CHCBB-KWWH6-BSKZC-SJ3TT-39S5Z
JZFTT-SSTC3-5FTT5-J3TB3-JSB9S
BZ6TT-JBWKB-KX3BK-BJT3T-5FS63
3Z6T3-CTWWB-KX3BW-3B3BT-SWBSB
THR3J-XTKC3-WFBTW-3TT3T-W6B5R
3H6BB-ZBKCJ-CFJT5-TBJJT-BFJHB
J9FBT-B55KT-56TJW-3TT3B-JZBSW
Community Challenge - Harlowe Skin Reward
The community cleared 571,670 contracts using Harlowe. Claim the Maliwannabee skin with this code:
Harlowe: J96JT-BCXKT-C6JJ5-JTJBB-BZTXJ
Previous skin rewards are still available:
- Rafa - "Savings Savior":
TZXT3-XJXCB-CXBJW-BTTJT-9SK6B - Amon - "Cult Classic":
JZ6BJ-SBR5J-WF3BK-BT3BB-TX9HB - Vex - "Mass Market Appeal":
BZ6JJ-CB6CT-WXJJW-3TT3B-56FZ5
Patch Highlights - Stability, QoL, and Balance
- Stability improvements, matchmaking reliability, and UI polish across platforms
- Lost Loot Machine prioritizes higher quality loot and SDU upgrades expand correctly in multiplayer
- Maurice's Black Market interaction is fixed in multiplayer
- UI and UX - sorting persists, weapon wheel and prompts behave more reliably, splitscreen improvements on console
- Assault Rifles receive notable buffs like Star Helix fire rate up and Lucian's Flank damage up
- Groundbreaker now stores only gun, action skill, and ordnance damage to prevent infinite loops
- Vault Hunter tuning - Harlowe performance cleanup, Vex Double Trouble buff to damage and duration, Amon and Rafa fixes
PC tip: NVIDIA users should update to driver 581.57 for crash fixes. Restart the game after patching to avoid matchmaking errors. For issues, contact 2K Support.
Full Patch Notes - October 23, 2025
Below are the complete Update Notes provided for October 23, 2025. We will monitor community feedback and update this post if anything changes.
Overview
Stability improvements, multiplayer fixes, UI polish, and quality of life upgrades across visuals, audio, and accessibility. Addresses reported issues across balance, loot systems, gear, achievements, late game flow, mission guidance, and overall player experience. The goal is to support the greatest number of viable builds.
- PC NVIDIA users: update to driver 581.57 released Tuesday, Oct 14 for GPU crash fixes
- Restart the game after downloading to ensure the update applies and to prevent connection errors in matchmaking
- For issues, contact 2K Support and review known issues and the PC Troubleshooting Guide
Horrors of Kairos - Seasonal Mini-Event
- Added support for the free mini-event live from Oct 23 to Nov 6
- Added the Murmur Legendary Tediore Assault Rifle and Skully Legendary Order Grenade to world boss rewards across Kairos for the event window. Delivered to the Reward Center and does not change other boss loot rates
- See the announcement article for the event and a spooky SHiFT code
Progression, Loot, and Rewards
- Specialization Respec Machine cost reduced from 5000 Eridium to 1500
- Added drops to a boss fight that was not dropping loot
- [PC] Ultimate Vault Hunter Level 5 Rank Up mission now correctly increases rank on Steam
- Granted missing cosmetic rewards for players who completed Kairos Speaks with 155 Echo Logs before a previous update
- Improved equipment handling when opening Rewards while driving
- Lost Loot Machine logic updated to better prioritize higher quality loot in overflow situations
- Lost Loot Machine SDU upgrades now expand slots properly in multiplayer
- Addressed an issue that could cause Lost Loot duplications in multiplayer
- Loot enemies now drop more cash
- Golden Chests can now be opened consistently after joining a session and redeeming SHiFT keys
- Reward Center behavior adjusted after claiming the Gilded Glory Pack to prevent loss of function
- Break Free reward bundle redemption standardized and now applies account-wide as intended
- Adjusted unlock conditions so Rift Incompatible achievement completes for all players in multiplayer
- Cut That Out achievement now unlocks when viewing the board from a further distance
- Crimson Rising achievement now unlocks at character level 10 as designed
- Catch a Ride achievement timing updated to unlock only at the intended progression point
- Challenge tracking updated so Jakobs Throwing Knives no longer count as gun kills
- Ensured Bobblehead collectibles in Pester's Grotto and Motherbird Node are accessible
- Discovered locations now stay discovered when returning to single player after multiplayer
- Fast Travel station unlocks corrected at intended points including concerns in Ultimate Vault Hunter Mode
- Vault Key animations now play correctly during ECHO-4 sequences
- ECHO Log pickup in Unpaid Tab now counts properly
- Amara's Escort to Core objective now advances when replayed
- Improved instances of mission waypoints not showing accurately
Gameplay and Missions
- Maurice's Black Market Vending Machine can be interacted with reliably in multiplayer
- Legendary Vending Machine no longer closes unexpectedly during Vend of the Line
- General improvements to prevent enemies getting stuck when spawning, addressed spawn point issues
- Beatloaf, Grip, and Shagriculture bounties now spawn reliably
- Fixed Terminus Range Vault enemies getting stuck on ledges during encounters
- Co-op Splashzone boss fight behavior is now more consistent
- Howl Capture Station no longer reactivates after safehouse capture
- One Fell Swoop updated to prevent players from being left floating. Bio-Bulkhead shows correct elemental icon and movement jitter after certain attacks is eliminated
- Warden Scathe no longer clips through arena walls
- Echo Location guidance improved across missions
- Patched collision gaps, holes, clipping, invisible walls
- Order drop pod events now reach the ground and do not appear stuck in the air
- NPCs should no longer cause players or vehicles to get stuck when run over
- Pangolin enemies can be damaged by grenades while in ball mode
- Chain Master trait now tethers to all allies in range when multiple enemies have the ability
- Mangler enemies no longer desync position when dodging in multiplayer
Vault Hunter Changes
Harlowe the Gravitar
- Addressed Gravitar builds that caused performance slowdowns. They should no longer prevent UI elements from updating or Fight For Your Life sequences from completing
- Gravitar passive and Augment bonuses to Gun Damage now apply to Ripper Heavy Weapon barrels and the Ripper Legendary Heavy Weapon Steamer. Entanglement interactions function as designed
- Gravitar class mods adjusted to no longer roll plus 5 Pencils Down and push passives past intended cap
Creative Bursts - Balance Adjustments
- Neutron Capture now converts all Gun Damage into radiation and applies only to Gun Shots, not all instances of Gun Damage
- Dev note: remained one of the best damage scalars but now behaves within expectations and offers radiation scaling vectors
- Cosmic Brilliance passive
- Flux Generator + Annihilation interaction updated so spawned grenades scale correctly with character level
Amon the Forgeknight
- Shield visuals adjusted for improved clarity
Trait - Forgeskill
- Interaction with Forge Master class mod adjusted so Forgeskill respects its cooldown in multiplayer
Onslaughter - Calamity
- Camera behavior stabilized when combining Onslaughter with Order Legendary Pistol Noisy Cricket
- Rocket Punch attack frequency is now consistent in multiplayer
Balance Adjustments
- There Is Only Red Duration restored no longer increases per point. Now 4 seconds for all ranks
- Dev note: keep power, make the effect harder to maintain
Scourge - Vengeance
- Scorched Kairos passive now displays consistent magazine size values for the Ordnance gadget
- The Forgewave no longer fires unintentionally during Glacial Rapture
- Projectiles no longer get stuck in the air when Forgemaster Firewall is active during the Fortress Indomita boss fight
- Blackout Shock Damage now scales properly with points invested
- Blackout is now 15 percent per point, down from 21 percent per point
- Dev note: after fixing DoT scaling, Blackout overperformed so it was slightly readjusted. Still an overall buff with correct DoT scaling
Crucible - Cybernetics
- Forgeknight Forgeaxe no longer disappears when activating Crucible at the same time as throwing with Double-Edge
- Crucible animation corrected while climbing
- Raging Inferno Incendiary Damage now scales properly with points invested
Vex the Siren
- Challenge Me, Myself, Myself, and I now tracks correctly in multiplayer, independent of clone duration on other players
Dead Ringer - The Fourth Seal
- Specter copied weapon now displays proper VFX when firing with a Maliwan Element Switcher
Incarnate - Vexcalation
- Bleed from Bloodletter updated so it no longer recursively triggers itself
Phase Phamiliar - Here Comes Trouble
Balance Adjustments
- Double Trouble Illusion Damage Multiplier is now 75 percent, up from 50 percent
- Double Trouble Illusion Duration is now 8 seconds, up from 5 seconds
- Apex Beast Damage Dealt increase is now 15 percent from 10 percent per stack of Unsealed
Rafa the Exo-Soldier
- Free Grenade from Filantropo class mod now deals appropriate damage even when no grenade is equipped
People Person skill tree - Action Skills - APOPHIS Lance
- APOPHIS Lance now penalizes Gun Accuracy instead of Gun Handling. Projectile speed remains unaffected
- APOPHIS Lance now benefits from cooldown reduction effects
Gear and Balance
- Skills that boost Gun Handling now properly increase Projectile Speed
- Fixed Free Loader Enhancement and Ripper magazine interaction that caused ammo consumption issues
- Legendary Repkit Adrenaline Pump now restores health correctly when combined with Legendary Shield Guardian Angel
- Jakobs crit knife critical chance reduced to 30 percent
- Dev note: this needed to happen
- Jakobs Legendary Pistol San Saba Songbird no longer stacks infinitely when swapping weapons
- Jakobs Shotgun with Torgue sticky and Knife Launcher underbarrel no longer deals knife damage after switching fire modes
- Jakobs parts updated so ricochet effects trigger only from intended damage sources
- Ripper Legendary Shotgun Golden God overheating effect now clears correctly when switching weapons
- Maliwan Legendary SMG Ohm I Got corrected so the first three shots no longer consume ammo without dealing damage during continuous fire
- Maliwan Legendary Heavy Gun Gamma Void corrected to apply increased Radiation damage to enemies inside the Singularity
- COV magazines now function correctly if a repair animation is interrupted with a Repkit in multiplayer
- Daedalus Legendary SMG Frangible removed from chest loot tables
- Daedalus Legendary AR First Impression reduced critical damage multiplier
- Recoil behavior improved for Order ARs and Torgue Heavy with Triple Barrel parts with Gun Handling passives
- Vladof Flamethrower underbarrel no longer deals infinite damage or bypasses Bio Armor
- Torgue Grenades with Spring and Apex Augments now always explode on the first apex
- Grenades with Spring plus Divider Payload now have three additional bounces as intended
- Gadgets no longer reset to maximum uses after gaining Second Wind
- Healing Orbs from Legendary Repkit Kill Spring can no longer heal enemies
- Order Legendary Shield Cindershelly combat voice lines now trigger less often
- Tediore underbarrel names now match correctly across item cards and ammo widgets
- Maliwan Lingering Payload and Splat Pack Augment projectiles no longer persist when thrown at vending machines
Gear Balance - Assault Rifles
- Star Helix fire rate increased by 33 percent
- Bonnie and Clyde base damage increased by 40 percent. Pair of Thieves bonus damage increased to 150 percent from 100 percent
- Bugbear base damage increased by 40 percent. Rotary Gun Max Damage increased to 200 percent from 100 percent
- Rowan's Charge base fire rate increased by 100 percent and recoil reduced slightly
- Lucian's Flank base damage increased by 50 percent and recoil reduced slightly
- Aegon's Dream base damage increased by 35 percent
Heavy Weapon Ordnance
- Gamma Void base damage increased by 450 percent. Singularity Duration decreased to 6 seconds from 10 seconds. Radiation damage amp increased to 50 percent from 40 percent. Gamma Void cooldown increased by 100 percent
- Ravenfire base damage increased by 25 percent
Class Mods - Dev Notes
Class Mods related to Melee Damage, Action Skill Damage, and specific one off stats on Legendaries have been buffed to make them more desirable.
All Class Mods
- Melee Damage and Action Skill Damage on level 50 class mods increased to 60 percent
- Skill Damage on level 50 class mods increased to 45 percent
Siren Class Mods
- Avatar's Attunement Skill Duration on level 50 class mods increased to 45 percent
- Kindread Spirits' Command Skill Cooldown rate on level 50 class mods increased to 45 percent
Forgeknight Class Mods
- Blacksmith's Forgedrone Duration on level 50 class mods increased to 45 percent
- Blacksmith's Legendary Effect also increases all Forgedrone Damage by 20 percent per active Forgedrone
- Viking's Detonation Damage on level 50 class mods increased to 60 percent
- Forge Master's Forgeskill Damage on level 50 class mods increased to 60 percent
- Elementalist's Legendary Effect now also increases all Damage Dealt by Amon by 2 percent per active Affinity Stack
Gravitar Class Mods
- Bio-Robot's Hazard Damage on level 50 class mods increased to 60 percent
- Skeptic's Stasis Damage on level 50 class mods increased to 60 percent
Other Gear - Dev Notes
Gear effects related to Melee and Action Skill Damage have increased effectiveness to raise melee builds while spreading power across multiple pieces.
Rep Kits
- Hard Hitter now grants 50 percent Melee Damage Dealt, up from 40 percent
Firm Ware
- Reel Big Fist now grants 25 percent Melee Damage at rank 1 and 2, up from 15 percent and 25 percent
- Action Fist now grants 25 percent Melee Damage at rank 1, up from 15 percent
- Action Fist now grants 30 percent Action Skill Damage at rank 2, up from 30 percent
- Action Fist now grants 30 percent Action Skill Damage on Melee Kill, up from 25 percent
Shields
- Boxer Armor Shields now grant 20, 30, or 50 percent Melee Damage based on parts rolled, up from 15, 25, or 40 percent
- Berserker Energy Shields now grant 20, 30, or 50 percent Melee Damage based on parts rolled, up from 20, 27.5, or 35 percent
Specializations
Groundbreaker
- Now stores only Gun, Action Skill, and Ordnance damage
- Dev note: prevented recursive loops and infinite damage. Will monitor melee builds and adjust if needed
UI, UX, Text
- Sorting settings persist when switching tabs or leaving the menu
- Toggle Junk behavior corrected in Bank and Backpack
- Weapon wheel no longer sticks when opened near Guns vending machines
- Press or Hold input now cancels correctly without triggering unintended actions
- Apply Settings prompt appears only when changes are made
- [PS5 and Xbox] Splitscreen updates for number scaling, Equipment or Backpack, scrollbar behaviors, Party list layout, and Flip Card
- Fullscreen resolution controls and switching behavior restored
- Weekly Activities now populate after campaign completion
- Maurice Black Market timer shows correct cooldown
- Firmware 3 Piece bonuses show cooldown icons. Deadeye Tier 3 stacks appear in the passive bar
- Boss Bar spacing corrected when Combat Radar is active
- Transfer Machine naming standardized
- Travel notification shows the initiating player's name
- ECHO Location path remains readable over time. Pathfinding improved
- UI visuals and icons updated for alignment and clarity. Localization and text descriptions updated
- Terminology standardized across gear, menus, customization, and manufacturers
Visuals
- Character and NPC animations updated
- Fixed VFX instances not rendering correctly
- Grapple Vault points now show proper models
- Reduced visual pops at cinematic starts
Audio
- Audio and VO remain active when returning to menus after level traveling in multiplayer
- Audio mix adjusted for improved balance across gameplay and VO
- SFX volume slider now applies to high HDR value sounds
- Fixed VO not playing as intended across multiple missions and scenarios
- Vault Hunter battle VO frequency tuned to repeat less often
- Missing pain reaction audio restored for several named NPCs
- Subtitle timing and text improved
- Background music continues as expected during the Idolator Sol boss fight
- Unique audio cue restored for Phosphene gear spawns
Settings and Accessibility
- Personal Cross play settings can be adjusted immediately after switching Party Privacy from Local Only to Public
- Air Dash fully usable on controller when Toggle Crouch is Off under Accessibility - Gameplay
- Individual graphics options reset properly after changing them and selecting Run Auto Detect
- [PS5 and Xbox] Field of View resets consistently to Default on consoles without mismatched values
Player Experience
- Improvements to stability and performance
- Addressed issues across multiplayer, missions, menus, engine systems
- Improved matchmaking and session stability
- Addressed performance in multiplayer with large numbers of homing projectiles
- Refined graphics settings and shader handling
- Improvements to patch reliability and automation processes
- Fixed an issue where the ocean could fail to load
Miscellaneous
- [Epic] Rich Presence displays correctly in non English languages
- [PS5] Friend list loads properly after logging out and back in during patch checks
- Joystick input behaves consistently when lowering deadzones
- [PS5 and Xbox] SHiFT account linking verification codes auto copy and apply correctly
Weekly Activities - Official Note
- Weekly Big Encore Boss switched to a tougher variant of a different existing boss with a more rewarding loot pool
- The Battle Wagon
- Weekly Wildcard Mission changed
- Mission: Dark Subject - Vampiric, Cold Hearted, Invisible
- Legendary Gear Reward: Kickballer
- Maurice Black Market moved and changed offerings. Location the same for everyone but item lists differ per player
