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Borderlands 4 Build

Stormbringer 2.0 - UVH6 Viable Crucible Spam

Amon

Crucible

End Game

Creator

By AncientRune

Updated on Dec 25, 2025

Dec 25, 2025

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
Weak against big armor bars
Vault boss melts are RNG
Not True UVH6 bossing viable

Skill Tree

Points Spent 0 / 49

LMB Allocate

RMB Unallocate

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 Bullet Train

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

Berserk - used to have skill damage apply to Slippy for stacking Skillcraft firmware

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.

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.

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.

Get with Damage Dealt or Elemental Damage for min maxing damage that double dips into Raging Inferno

Enhancement:

Anything goes for enhancement that matches with your gun of choice as long as it has the gun splash passive

If going with my recommended gun of choice the Stellium then get the Primed Potency Enhancement.

Firmware

Repkit & Ordnance

Repkit FirmwareGod Killer

Ordnance FirmwareAction Fist

Utilities

Class Mod FirmwareEmpty

Shield FirmwareEmpty

Enhancement FirmwareEmpty

3/3 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

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