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Borderlands 4 Build

UVH6 Viable Crucible Spam - Stormbringer 2.0

presentationAmon
presentationCrucible
End Game
Creator
Updated on Jan 12, 2026
Jan 12, 2026

Build Overview

This build is about spamming Crucible and your Forgeskill as much as possible for amazing melee damage. This is all built around maximizing your damage of Raging Inferno.

There will be a mix of Hour of the Hammer and Blade Tempest

This is the successor to my Wonderlands Stormbringer Build

Strengths And Weaknesses

  • Easy Mobbing
  • High Damage Bossing
  • Survivability
  • 95% crit chance
  • SO MUCH FUN
  • True UVH6 mobbing viable
  • Gear specific
  • Does not work on Radix or Timekeeper unless you change the theme of the build
  • Not very True UVH6 bossing viable
  • Does not get UVH6 Bloomreaper Platinum. Still sub 2 min runs

Skill Tree

Points Spent 0 / 49
LMB Allocate
RMB Unallocate
Crucible
5/5
5/5
1/5
1/1
3/5
5/5

Action Skill:

Crucible - melee action skill that can deal great damage, spammable, and tons of fun. Not the strongest thing in the world but it is viable

Hour of the Hammer - star of the show for mobbing. The AOE effect lets you hit multiple enemies and less likely to miss your target

Blade Tempest - the big bosser. The spam of blades makes you apply tons of Raging Inferno DoTs and then Detonate to do even more damage

Double Edge Forgeskill - we cannot reach a capstone currently so we are stuck with our basic option. This still does great damage for mobbing and a huge part of bossing. When detonating primed enemies you will have a huge explosion which can crit and apply its own Raging Inferno DoT for potentially millions of damage.

Green Tree:

Executioner - crit damage that will double dip into Raging Inferno if the DoT also crits. Better than Gathering Storm since this skill will be easily active during bossing.

Destruction Engine - mainly for detonation damage

Herald's Call - for boosting Electrical Fire shock DoT to help w/ shielded bosses.

Tempered Pyre, and Twin Tempers for proccing Fists of Stone

Raging Inferno - double dipping status effect that will be our single target damage (BUG: does not benefit from skill damage) This is a key skill

Red Tree:

Discombobulate - increased crit chance for Raging Inferno

Impetus - Increased movement speed for QoL

Gut Punch - damage boost that double dips

Tritanium Knuckles - both bonuses benefit Crucible

The Best Defense - simple overshield

Forged In Steel - insanely helpful for when you use Protean Cell

Catastrophe - increased crit chance for Raging Inferno

Fists of Stone - allows us to spam our Forgeskill a crazy amount. This is a key skill

Electrical Fire - turn big Raging Inferno status effects to huge Shock status effects. Deals 50% of Raging Inferno. This is a key skill

Blue Tree:

The Thrill - amazing survivability skill

Equipment

Weapons
Repkits & Ordnance
Utilities

Guns:

You will want to hold any splash weapon to benefit from the gun splash damage bonus on your Enhancement. When holding a splash gun and having gun splash damage it will act as all damage dealt. Making it an excellent stat stick. I go with the Stellium which is a high DoT Maliwan Shotgun which is easy to use with the Primed Potency Enhancement. Solid to shoot with mobbing

Jakobs Pistol Vial Launcher Underbarrel - This damage boost is great for min maxing. You can shoot the vial at the enemy then swap to the splash gun.

Mantra - deals melee damage. not terrible but not the best. Used for Bloomreaper strat. Get w/ Ripper and Jakobs part. Element doesn't matter for Bloomreaper.

Ordnance:

Slippy - deals good damage and procs Fists of Stone more often

Jakobs Grenade Crit Knife - go to for bossing for applying crit chance to Raging Inferno. Should only need 2 or 3 stacks at max.

Shield:

Protean Cell - Go to for bossing. The shock bonus element applies to status effects where most bonus elements do not do this. So you will get 40% shock damage based on your Raging Inferno and Electrical Fire DoTs. It is VERY NOTICEABLE. Some weaker bosses might not need this. You also become a lot less tanky since damage goes directly to your health unless you have overshield. The bonus element can also proc it's own Raging Inferno DoT at 40% power (because bonus element is 40%) and then apply its bonus element to that DoT.

Firewerks - Go to for mobbing. The projectiles kill enemies so you don't have to which means faster mobbing.

Watts 4 Dinner - my favorite for mobbing. The bonus element has it's own chance to proc Raging Inferno but only at 25% power. Still sometimes enough to get the kill on enemies. Or just have 2 RI dots at once. Get w/ siphon for better survivability

Class Mod:

Skill Crit Chance is VERY noticeable and helpful as a passive. Gives consistency for DoTs which I prefer over basic soup damage boosts. I would not use melee crit chance and only Skill crit chance as it will then apply to Detonations as well which is the go to for bossing

Furnace - +5 into Raging Inferno and ideal passive is all you need for this. Go to for mobbing and bossing as long as you follow the right gear. Viking unfortunately is just not worth it as the loss of crit chance and weaker Raging Inferno is very noticeable.

Repkit:

Triple Bypass - able to activate Crucible more often w/ Now With Caffeine

War Paint - can use instead for Bullet Train + I Am A Gun combo when using Blade Tempest and don't need to use Now With Caffeine. Just helps push a little bit more skill damage.

Get with Damage Dealt or Elemental Damage for min maxing damage that double dips into Raging Inferno. For mobbing get Action Skill cooldown rate

Enhancement:

Ideal passive: Gun Splash Damage (applies to everything when holding a splash gun)

Maliwan Enhancement Transfuser - When holding a maliwan shotgun it will spread the DoT of the gun held with ANY kill. Use this with a Stellium with as high dot damage as possible in Fire and possibly Shock.

Maliwan Enhancement Primed Potency - use this to get damage out of the stellium as well.

Jakobs Enhancement Bounce Pass - Extra ricochet projectile. used w/ Mantra during Bloomreaper crystals.

Jakobs Enhancement Piercer - 20% crit chance. used w/ Mantra. 2nd option for Bloomreaper Crystals.

Firmware

Repkit & Ordnance
Repkit FirmwareGod Killer
Ordnance FirmwareAction Fist
Utilities
Class Mod FirmwareAction Fist
Shield FirmwareSkillcraft
Enhancement FirmwareSkillcraft

2/3 Skillcraft - get more skill damage which applies to Action Skill and Detonations (but not Raging Inferno) as well as Skill crit chance for more crit consistency without worrying about crit knife. Don't go 3/3 bc hard to keep up stacks

1/3 God Killer - lower bonus than other melee & AS firmware but will double dip which makes it a better choice.

2/3 Action Fist - Melee damage and Action Skill damage boosts Hammers. AS damage boosts Detonations for bossing.

Specializations

Specialization 1Now With Caffeine
Specialization 2I Am A Gun
Specialization 3The Best Defense
Specialization 4A Honed Mind

Now With Caffeine - using w/ Triple Bypass you can easily spam your Crucible during mobbing. Also helpful during bossing with Blade Tempest

A Honed Mind - skill crit chance to proc Raging Inferno more often

The Best Defense - double dips into Raging Inferno

I Am A Gun - skill damage boosts Crucible. Don't have much if any gun damage tho so this could go for anything.

Bullet Train - gun damage to go into I Am A Gun. Can use until you reach The Best Defense or pair it when using Blade Tempest and replace w/ Now With Caffeine if you can kill the boss in 1 action skill activation.

Tripwire - can use w/ mobbing and bossing for more throw of Slippy and Crit Knife. Replace w/ I Am A Gun when you have the specialization points to do so


Gameplay

Mobbing

Spam Crucible. Use whatever element is best

Active your Forgeskill

Throw Slippy for Fists of Stone to activate Forgeskill more often

Use your Repkit to get back charges and repeat.

Bossing

When using Blade Tempest

Slam for Protean Cell

Throw Crit Knife at boss to stack crit chance (at least once)

Activate Blade Tempest for Raging Inferno DoTs. Use whatever element is best

Activate Forgeskill for huge Detonation Damage.

Throw Crit Knife for crit chance w/ Raging Inferno

Use Repkit for more charges and repeat if not dead

When using Hour of the Hammer

Slam for Protean Cell

Throw Crit Knife at boss to stack crit chance (at least once)

Throw all charges of Hour of the Hammer for Raging Inferno DoTs. Use whatever element is best

Use Repkit once or twice for 1 or 2 more charges (leads to 8 or 10 prime stacks) and throw more hammers.

Activate Forgeskill for huge Detonation Damage.

Throw Crit Knife for crit chance w/ Raging Inferno

Use Repkit for more charges and repeat if not dead

Bloomreaper

Gear used: Blade Tempest, Now With Caffeine, Jakobs Enhancement, Mantra, Crit Knife, Watts 4 Dinner, Triple Bypass w/ Action Skill Cooldown Rate

You are not getting Platinum on UVH6 or at least not easily. This is if you want to use at lower difficulty or just for fun.

When crystals spawn. Use your Forgeskill often and try and line up to hit 3 crystals at once. Do this everytime your charges come back.

You can also activate Blade Tempest and aim around multiple crystals to hit them w/ Raging Inferno dots.

When the crystals break use Mantra to shoot the crystal orbs.

While Bloomreaper is getting into the next phase use your repkit to get back charges. Time it so you also get full charges by the time Bloom can get hit. You still need repkit charges later.

Once Bloom can be damage wait for it to land and throw Crit Knife at the boss. Then use Blade Tempest. Throw more crit knives after that. Use repkit to get back charges. Use Blade Tempest again until boss is onto the next phase.

Try and kill some enemies w/ your Forgeskill while Bloom is going into final phase for some Repkit charges.

Once at the final phase do the same thing as before w/ crit knife, Blade Tempest, and repkit.

Changelog

January 11th 2025 - refined a lot of stuff

December 24th 2025 - UVH6 update. Video & Save file coming soon

November 24th 2025 - finally updated with crit knife being fixed

October 29th 2025 - added build video (existed for a bit but forgot to add lmao)

October 24th 2025 - Official Build Released. NO MORE RAGING INFERNO BUG!

Video Guide

Table of Contents

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