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Borderlands 4 Build

UVH6 Mantra Melee Amon - Amontra

Amon

Onslaughter

End Game

Verified

By AncientRune

Updated on Jan 10, 2026

Jan 10, 2026

Build Overview

This build is all about maximizing the damage of Mantra on Amon

This is a slightly altered spec of my Aim On build

Using the Mantra allows for easy uptime on Berserk and spamming Stormcutter since our gun procs Fists of Stone

Strengths And Weaknesses

Amazing bossing
Easy mobbing
Great survivability
UVH6 Viable

Not very ammo efficient. Lots of looking for ammo boxes
Gear specific
UVH6 Big Bossing requires even more specific gear
Not easy for UVH6 Bloomreaper plat

Skill Tree

Points Spent 0 / 49

LMB Allocate

RMB Unallocate

3/3

5/5

1/3

4/5

1/1

1/5

5/5

2/5

3/3

5/5

1/1

Action Skill:

Calamity - used for the easy bonus element. The movement speed and shield recharge helps with survivability

Force of Nature - Double dipping explosion based on the last 10 STRONGEST hits IF that hit applied a prime stack. MUST HAVE FOR BOSSING. You will notice the explosion itself may not get the kill on non flesh bars but it builds up Groundbreaker which will get the finishing blow

Pyroclast - Go to for mobbing to extend duration. Not as good for splash guns like the Mantra as you have to be close for this but if a Firewerks projectile gets a kill while you are close to the enemy then you get AS duration returned.

Stormcutter - proc detonations, extend AS duration, and give AS and Ordnance Cooldown. A lot easier to apply Forge skill damage for detonations compared to base Molten Slam.

Red Tree:

Impetus - increased movement speed for Bullet Train & recharge rate for survivability

What Burns Within - increases Onslaughter and Force of Nature damage

Gut Punch - Damage boost that double dips in Force of Nature detonation and Groundbreaker

Tritanium Knuckles - Skill damage boosts Berserk bonus element and Force of Nature. Both bonuses boost Groundbreaker

Metal Urge - 50% action skill cooldown to cycle Onslaughter

Forged In Steel - Immunity to damage which helps survivability. Not a focus for survivability just kind of nice. And we spam our Forgeskill pretty often.

Bloodlust - gain some lifesteal and reload speed which is nice but really to get down the tree for capstone

Berserk - Cryo bonus element applies to Mantra. Does not apply to Force of Nature nor DoTs. This will apply to (but never stack) Groundbreaker This is a key skill

There Is Only Red - Boosts your Berserk bonus element by up to 210% at 5/5. 420% at 10/5. This is a key skill

My Touch Is Death - activates your kill skills. Procced by Slippy and Mantra. Mainly helps with There Is Only Red. Some class mod choices can get good kill skill skills. This is a key skill

Catastrophe - increased crit chance and crit damage for your guns and whatever else crits from crit chance. Easy to keep up with Onslaughter bonus element and Electrical Fire

Fists of Stone - Using Slippy and Mantra you can easily keep up your Forgeskill. This is a key skill

Electrical Fire - Used for keeping up Catastrophe other stacks

Green Tree:

Executioner - easy to keep up and use

Get The Lead Out - nice reload speed because of reloading so much

Equipment

Weapons

Repkit & Ordnance

Utilities

Gun:

Mantra - deals gun and melee damage. Get w/ Jakobs & Ripper parts. Get as many variations of elements as possible.

The melee portion allows us to proc

My Touch Is Death to easy stack There Is Only Red,
Fists of Stone for tons of Stormcutter spam in mobbing and bossing which is great for proccing Force of Nature multiple times. Even though the damage is not the highest ever for damage, the easy spam of multiple Force of Nature procs is what helps this build keep up. This also allows us to spam Forged In Steel to be pretty much invincible a lot of the time. Which helps being up closers for Pyroclast.
Gut Punch for an easy damage bonus that double dips
The Best Defense for permanent overshield
Discombobulate for additional crit chance on gun shots
Easy proccing of Executioner doubled bonus

Ordnance:

Slippy - Used to proc My Touch Is Death and Fists of Stone easier. Get + 1 charge part. Also is good for damage in mobbing because of Berserk

Jakobs Grenade Crit Knife - used for bossing. Helps anything that doesn't have high crit chance get the crit chance that is needed.

Shield:

Firewerks - used for mobbing. Benefits from Berserk making it get kills easily

Watts 4 Dinner - used for bossing. Safe option w/ a nice bonus element. Can get w/ Siphon or whatever you want. Siphon isn't the biggest deal because of The Best Defense

Protean Cell - used for bossing. Stronger bonus element but less tanky. Use when paired w/ Furnace

Classmod:

Ideal passives: skill damage, damage dealt, elemental, gun, melee

Shatterwight - for points in Berserk. Makes your 210% bonus element into a 420% bonus element. Huge for mobbing and bossing

Furnace - for points in Raging Inferno. Only needed for TRUE UVH6 Bossing for quick boss melts. Force of Nature will proc Raging Inferno for huge dots. For Radix shatterwight is still on par. This is not needed for effective kills but they are flashier. Shatterwight can still work on True UVH6.

Repkit:

Triple Bypass - get Action Skill Cooldown, Elemental, or Enrage. Used for getting back Onslaughter via Now With Caffeine.

Enhancement:

Ideal passives: gun damage, shotgun damage, gun splash damage

Jakobs Enhancement Piercer - increased crit chance that means not needing to hit the crit spot as much. Also applies to Berserk. Good for mobbing

Jakobs Enhancement Bounce Pass - extra projectile helps for mobbing

Ripper Enhancement Hard Charger - more on shot gun damage but longer charge. Used for bossing

Ripper Enhancement High Roller - stacking on shot gun damage per shot fired. Used for bossing

Firmware

Repkit & Ordnance

Repkit FirmwareHigh Caliber

Ordnance FirmwareHigh Caliber

Utilities

Class Mod FirmwareEmpty

Shield FirmwareEmpty

Enhancement FirmwareEmpty

2/3 High Caliber - gun damage is only additive w/ Enhancement Gun Damage in this build

3/3 Skillcraft - gives skill crit chance and damage. Applies to Berserk, Force of Nature, and Groundbreaker

Specialization

Specialization 1I Am A Gun

Specialization 2Bullet Train

Specialization 3Riddle You This

Specialization 4Now With Caffeine

Now With Caffeine - reduces your action skill cooldown by 1/4 NOT ACTION SKILL COOLDOWN RATE

Bullet Train - decent gun damage but allows run n gun

Riddle You This - easy to keep up stacks

I Am A Gun - SKILL DAMAGE* applies to Berserk, Force of Nature, Groundbreaker, and Onslaughter bonus element.

Groundbreaker - this is going to be huge for some bosses where you can't get the kill from just the gun and Force of Nature. Groundbreaker gets Berserk as well which helps damage a lot. Groundbreaker will take in the millions of damage from your gun and millions of damage from force of nature then go through the melee formula. Swap w/ Now With Caffeine for this. You can also use this in mobbing where I would prob swap Riddle You This.

The Best Defense - this will apply to EVERYTHING dealing damage. This is noticeably better for bossing compared to Riddle You This. It does require 20 extra specialization points to get so if you had to choose one then The Best Defense is going to be better for the mix of mobbing and bossing.

Gameplay

Mobbing:

Activate Stormcutter for Berserk

Throw Slippy to quickly stack There Is Only Red (your gun shots can do it on it's own but this is faster)

Activate Onslaughter

Get shootin.

Throw Slippy around for getting kills as well

Use Repkit when Onslaughter goes on cooldown

Bossing:

Slam if using Protean Cell otherwise ignore this step

Activate Stormcutter for Berserk

Activate Onslaughter

Use Repkit if using a damage boost passive

Start throwing Crit knife. Can do 1 throw before shooting and then keep throwing while shooting or just do it after shooting.

Shoot Mantra

Once at 10 stacks activate Stormcutter for Force of Nature. I usually just empty the magazine then do this as to guarantee 10 strong stacks.

Then proc Groundbreaker via Onslaughter punch.

If boss isn't dead then get back to shooting and repeat the last 2 steps. Because Mantra is melee, it's VERY easy to get back Stormcutter for proccing Force of Nature again. Leading to fast loops of this