Fortnite’s September 12 hotfix revives beloved weapons and unleashes an Iron Man collab in Blitz mode.
Recently, Epic deployed a patch this past Wednesday on September 10, that added files for the Kai Cenat collab and brought quests for the Megazord mythic with a community challenge. However, on September 12, Epic once again shuffled the loot pool in Battle Royale and brought a new Marvel-themed Blitz week that players are absolutely loving right now.
Fortnite September 12 Hotfix Battle Royale Changes
The September 12 hotfix for Fortnite Battle Royale adjusts several gameplay elements, reintroducing a selection of fan-favorite weapons to the loot pool while fine-tuning their balance. Players can also expect minor map updates and bug fixes aimed at improving performance across all platforms. The update ties into the ongoing Iron Man collaboration featured in the Blitz mode, adding themed items and challenges for a limited time. These changes bring a fresh mix of strategy and nostalgia to the fast-paced matches.
Fortnite has vaulted, unvaulted, nerfed, and buffed several weapons across the ongoing Chapter 6 Season 4 loot pool, which has shifted the meta once again. Here’s an overview of all the new changes:
Loot Pool Changes
Vaulted Weapons: Twinfire Shotgun
Unvaulted Weapons: MK-Seven Assault Rifle, Spire Rifle, Holo Twister Assault Rifle, Frenzy Auto Shotgun
The MK-Seven AR, Holo Twister AR, Spire Rifle and Frenzy Auto Shotgun have returned!
— Fortnite News (@Guille_GAG) September 12, 2025
The Twinfire Shotgun has been vaulted! #Fortnite pic.twitter.com/hFZ6QB8FAR
Weapon Adjustments
Nerfed Guns
- Wrecker Revolver (Common to Exotic) has been nerfed
- Damage per shell decreased by 6%:
- 7.4/7.8/8.2/8.6/9.0/9.4/6.7 –> 6.9/7.3/7.7/8.1/8.5/8.9/6.2
- Environmental Damage per shell decreased by 2%:
- 4.5/4.8/5.0/5.3/5.5/5.8/4.8 –> 4.4/4.7/4.9/5.1/5.4/5.6/4.8
- Damage per shell decreased by 6%:
Buffed Guns
- Veiled Precision SMG (Common to Mythic) has been buffed
- Clip Size increased by 9%: 21 –> 23
- Firing Rate increased by 1%: 10.3/s –> 10.4/s
- Hyperburst Pistol (Common to Exotic) has been buffed
- Clip Size increased by 14%: 21 –> 24
- Burst Firing Rate increased by 5%: 18/s –> 19/s
- Twinfire Auto Shotgun (Common to Exotic) has been buffed
- Damage per shell increased:
- 5.9/6.3/6.6/6.9/7.3/7.6/7.6 –> 6.1/6.5/6.8/7.1/7.5/7.8/7.8
- Reload Time decreased:
- 4.7s/4.5s/4.3s/4.1s/3.8s/3.6s/3.6s –> 4.4s/4.2s/4.0s/3.8s/3.6s/3.2s/3.2s
- Damage per shell increased:
Fortnite September 12 Hotfix Blitz Royale Changes
Blitz receives a September roster refresh with fan-favorite weapons returning and an Iron Man collaboration adding a new twist to combat, while balance tweaks and sandbox adjustments sharpen the mode’s fast-paced pace.
The latest Fortnite Blitz Royale hotfix added Stark Island and Iron Man mythics to the game mode, alongside several new weapons and items to the loot pool. Here’s what the changes look like:
New Map
A new Stark Industries Map has been added to Blitz with three POIs, namely Stark Industries, Stark Academy, and Stark Cabin.
STARK INDUSTRIES MAP FOR BLITZ!!! 🔥🔥🔥
— Loolo | Fortnite Leaks (@Loolo_WRLD) September 12, 2025
(@NotPaloleaks) #Fortnite pic.twitter.com/r0xkzvAVKv
Loot Pool Adjustments
Bus Starting Items
Added:
Set 1 (50%):
- War Machine’s Arsenal
- War Machine’s Hover Jets
Set 2 (50%)
- Stark Industries Energy Rifle
- Iron Man Flight Kit
Removed
- Eradicator O.X.R. Rifle
- Double
- Trouble
- Eradicator Marksman Wrecker Revolver
- Eradicator Shock n’ Slow Shockwave Launcher
- Eradicator Shadow Precision SMG
- Eradicator Hop Rock Fury Assault Rifle
- Exotic SlapBerry Fizz
- Shield Bubble Jr.
Standard Silver Llamas Adjusted
Added
- Lawless Blink Pump & Dump
- Lawless Explosive Mammoth Pistol
- Lawless Twinfire Slap Shotgun
- Lawless Trinity Assault Rifle
- Shadow Tracker
- Heisted Blink Mag SMG
- Heisted Run ‘N’ Gun SMG
- Heisted Breacher Shotgun
- Heisted Accelerant Shotgun
- Hop Rock Dualies
- Lawless Rift Launcher
- Lawless Accelerant Holo Twister AR
Golden Mythic Llamas Adjusted
Added
- Lawless Blink Pump & Dump
- Lawless Explosive Mammoth Pistol
- Lawless Twinfire Slap Shotgun
- Lawless Trinity Assault Rifle
- Shadow Tracker
- Heisted Blink Mag SMG
- Heisted Run ‘N’ Gun SMG
- Heisted Breacher Shotgun
- Heisted Accelerant Shotgun
- Hop Rock Dualies
- Lawless Rift Launcher
- Lawless Accelerant Holo Twister AR
Removed
- Megalo Don’s Nitro Fists
- Thunderbolt of Zeus
Supply Drops Adjusted
Added
- Lawless Blink Pump & Dump
- Lawless Explosive Mammoth Pistol
- Lawless Twinfire Slap Shotgun
- Lawless Trinity Assault Rifle
- Shadow Tracker
- Heisted Blink Mag SMG
- Heisted Run ‘N’ Gun SMG
- Heisted Breacher Shotgun
- Heisted Accelerant Shotgun
- Hop Rock Dualies
- Lawless Rift Launcher
- Lawless Accelerant Holo Twister AR
Removed
- Blitz Chain of Hades
- Typhoon Blade (Mythic)
Random Exotic Rewards Adjusted
Removed
- Unstable Yoink Shotgun
- Unstable Voltage Burst Pistol
- Unstable Frostfire Shotgun
- Eradicator Marksman Wrecker Revolver
- Eradicator O.X.R. Rifle
- Eradicator Hop Rock Fury Assault Rifle
- Eradicator Shock n’ Slow Shockwave Launcher
- Double
- Trouble
- Eradicator Shadow Precision SMG
- Exotic SlapBerry Fizz
Medallion Pool Adjusted
- Removed Ringmaster Scarr’s Medallion
Apart from these changes, Iron Man’s Flight Kit and Stark Industries rifle have also received some changes.
Iron Man’s Flight Kit Adjustments
Iron Man’s Flight Kit has been buffed for Blitz:
- Cooldown reduced by 75%: 20s –> 5s
- Cooldown after taking damage reduced by 60%: 20s –> 8s
- Ground Slam player damage increased by 50%: 60 –> 90
Which weapons were unvaulted in the September 12 hotfix
MK-Seven Assault Rifle, Spire Rifle, Holo Twister Assault Rifle, and Frenzy Auto Shotgun were unvaulted in Fortnite’s September 12, 2025 hotfix.
Key Details
This hotfix occurred during Chapter 6 Season 4 and shifted the Battle Royale loot pool by bringing back these fan-favorite weapons previously removed. The changes took effect mid-tournament in some cases, surprising players with their return.
Context
In tandem, the Twinfire Shotgun was vaulted to balance the pool. These updates aimed to refresh the meta ahead of Blitz mode enhancements.
List the unvaulted weapons with their rarities
MK-Seven Assault Rifle, Spire Rifle, Holo Twister Assault Rifle, and Frenzy Auto Shotgun were unvaulted in Fortnite’s September 12, 2025 hotfix, available in Common through Legendary rarities.
Weapon Rarities
These weapons returned to the Battle Royale loot pool across standard rarities, with no specifics on limited variants mentioned. Availability in chests, floor loot, and supply drops followed typical Fortnite patterns for unvaulted guns.
Impact
Unvaulting refreshed the meta during Chapter 6 Season 4, pairing with the Twinfire Shotgun vaulting for balance. Players accessed higher-rarity drops via upgrades and high-tier loot sources.