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Borderlands 4 Build

TRAUNTastic - Use ANY GUN at UVH5

presentationHarlowe
End Game
presentationFlux Generator
Verified
Updated on Dec 2, 2025
Dec 2, 2025

Build Overview

My take on the standard Nuclear Winter Group Study Green Tree Harlowe gun build.


Infinite Crits, Infinite Ammo, Infinite Amp, Infinite Action Skill, Infinite Damage


Strengths And Weaknesses

  • Top tier mobbing
  • Top tier bossing
  • VERY gear flexible
  • survivability relies on repkit healing and shield steal

Skill Tree

Points Spent 0 / 49
LMB Allocate
RMB Unallocate
Flux Generator
5/5
5/5
2/3
3/3
5/5
5/5
2/5
1/1
5/5
5/5
5/5
1/5
5/5

Action Skill:

Flux Generator - used for the augments and capstone

Nuclear Winter - used for keeping up Excited State and Distribution Function to then go with other skills

Group Study - gun damage is on shot (mult with normal gun damage) and the other stats are amazing for DPS

Green Tree:

Momentum - easy to keep up

Mass Function - reload speed helps for certain guns. Personal choice. Neutron Decay is better if you find yourself not reloading a lot.

Confirmative Reality - super easy to get back Flux Generator with this. This is a key skill

Creative Overflow - a little bit of extra gun damage

Decoherence - great consistent bonus element.

Feedback Loop - helps keep up and cycle Action Skill

Latent Charge - solid bonus element that's easy to keep up. Does not benefit from gun damage but DOES benefit from skill damage

Runaway Reaction - helpful to entangle enemies when Flux Generator is on cooldown to then get Confirmative Reality procs going

Harlowe's Certainty Principle - better QoL and more projectile speed

Critical Funding - grants free ammo. it is not taking from reserves. This is a key skill

Excited State - allows for infinite crits as every gun shot activates this via Nuclear Winter. Great w/ Jakobs Ricochet part. This is a key skill

Distribution Function - allows for easy upkeep of Amp shields and overshield. This is a key skill

Accretion - nice extra survivability

Equipment

Weapons
Repkit & Ordnance
Utilities

Guns:

I like to focus on stickies and ricochets with the use of infinite ammo and crits to make it feel different than other gun builds but you can use literally any gun. Experiment as much as you want.

Stray - mobbing GOD. must have item. Get w/ either jakobs and/or daedalus shotgun

Convergence - great for mobbing and bossing. Get w/ jakobs ricochet

Queen's Rest - bossing GOD. Get w/ Torgue stickies, Jakobs ricochet, and Ripper

Rowdy Rider - great for mobbing. Get w/ Torgue impact or stickies

Darkbeast - amazing for mobbing and awesome for bossing. Get w/ Jakobs ricochet and Daedalus Shotgun. Can replace Daedalus w/ Maliwan element switch for mobbing.

Stop Gap - Amazing for bossing. Get w/ Jakobs ricochet

Complex Root - bossing GOD. Get w/ Atlas darts and Jakobs ricochet

Kaoson - great for bossing. Get w/ 4% stickies.

Rowan's Charge - great for mobbing

Lucian's Flank - great for mobbing

Wombo Combo - w/ Ripper

Goalkeeper - w/ Jakobs Ricochet

G.M.R. - w/ Jakobs ricochet

Fisheye - w/ Jakobs ricochet

Jakobs Shotgun Balor - w/ Torgue impact for mobbing

Vladof SMG Boory - w/ Torgue impact and Jakobs Ricochet for mobbing. Use extra barrel alt fire

Bod - i hate this gun but i had to mention it. The BEST bossing gun with its 5x boost to gun damage. Get w/ Torgue stickies and Daedalus SMG

Grenade:

Firepot - counts as a gun so it spreads Nuclear Winter for a better ranged option to apply Entangle

Slippy - can be used w/ CQC as well as breaking Vile Crystals

Repkit:

Triple Bypass - used for multiple charges to heal since there isn't much survivability otherwise. Any good part can be used as w/ low cooldown + low healing or long cooldown + high healing

Class Mod:

Passives to look out for: gun, gun type, elemental, element type, crit

Bio-Robot - Used for the skill points in Confirmative Reality and Sustained Reaction to improve mobbing a lot. Get tons of Group Study stacks w/o worrying about the AS Duration Drain

Reactor - for the points into Decoherence for bossing

Shield:

Watts 4 Dinner - w/ Amp and/or Siphon. Great for both mobbing and bossing

Guardian Angel - w/ Amp. Great for both mobbing and bossing. Preferred over Watts when using Torgue Stickies because of better recharge rate since there won't be good uptime on Distribution Function for keeping up amp.

Protean Cell - good for bossing. Can also be another good choice for stickies.

Firewerks - amazing choice for mobbing. Benefits from Nuclear Winter and Latent Charge

Enhancement:

Passives to look for: gun damage, gun type damage, fire rate

You are basically using any good enhancement that synergizes w/ your guns. I will list a couple I know work great

Jakobs Enhancement - Bounce Pass (extra ricochet) and Sequencer (increased damage after critting)

Torgue Enhancement - Head Ringer (increase damage and splash radius)

Ripper Enhancement - High Roller (increased damage on consecutive hits) and Short Circuit (chance to increase fire rate after reload)

Vladof Enhancement - Bullet Hose (chance for extra projectile) and Box Magazine (increased fire rate and mag size)

Order Enhancement - Power Shot (increased damage on full charge)

Atlas Enhancement - Trauma Bond (increased damage w/ Target Lock) and Protractor (chance to not consume ammo)

Firmware

Repkit & Ordnance
Repkit FirmwareHigh Caliber
Ordnance FirmwareHigh Caliber
Utilities
Class Mod FirmwareDeadeye
Shield FirmwareDeadeye
Enhancement FirmwareDeadeye

3/3 Deadeye - super easy to keep up because of Excited State

2/3 High Caliber - consistent gun damage but additive w/ Group Study and enhancement gun damage. Can go 3/3 for the pierce if certain weapons like it.


Other options depending on guns:

Atlas EX - for on shot gun damage

Atlas Infinum - for on shot gun damage

Heating Up - for reload speed w/ guns that have you end up reloading

Airstrike - splash radius

Get Throwin - more splash radius

Bullets to Spare - more fire rate

Daed-dy O - on shot damage and fire rate

Oscar Mike - bit of QoL gun stuff

Trickshot - extra ammo return can be nice w/ guns that don't easily benefit from Critical Funding

Specialization

Specialization 1Riddle You This
Specialization 2Bullet Train
Specialization 3I Am A Gun
Specialization 4A Honed Mind

Riddle You This - easy to keep up with most guns used

Bullet Train - solid gun damage

I Am A Gun - actually skill damage which will benefit all our shots because of Nuclear Winter

Flexible 4th options:

A Honed Mind - because of Nuclear Winter and Excited State the crit damage is always active

CQC - fire rate easily procced by Slippy

In The Zone - easy damage boost

The Best Defense - solid damage boost

Gameplay

Activate Flux Generator

Retrigger from time to time for Group Study

Shoot gun and win

Throw grenades when needed.


Notes

SAVE FILE

DISCLAIMER: some gear on this save may have been made via a third party gear editor. Use at your own risk of using illegitimate items. It is not my intention to make illegal gear but sometimes accidents happen

Changelog

November 28th 2025 - build released!

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