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Borderlands 4 Build

Mixocannon Rafa - lvl 70 PeaceBreaker Cannon Build

Rafa

Peacebreaker Cannons

End Game

Leveling

By LazyData

Updated on Sep 30, 2026

Sep 30, 2026

Build Overview

Kick back and watch your Peacebreaker Cannons do all the work for you with Mixocannon Rafa.

Strengths And Weaknesses

Good from a low level
Very easy to play
Easy to farm
High damage potential

Limited to no weapon diversity

Skill Tree

Points Spent 0 / 69

LMB Allocate

RMB Unallocate

5/5

2/5

3/3

5/5

1/5

3/5

4/5

1/5

5/5

2/3

5/5

1/1

Drop Conductivo for a few Brain Dump until you get Skillcraft online. You'll want some crit chance to help Juerga.

Inspirado can go to El Catrin for extra damage if AS duration is a non issue.

Double-Ought Autoshot and Beam Team are interchangeable. I like Double-Ought Autoshot the most.

Equipment

Weapons

Repkit & Ordnance

Utilities

GUNS

Beam Team underbarrels on Maliwan Shotgun is the way to go, bigger number better. SMG Railguns are also good. Just go for bigger number on the card damage. In Levelling normal, non underbarrel Stelliums will be enough in low or 0 UVH.

Devourer - Shoot your Beam Tosser, swap to an element match Devourer and the boss should just insta-die if done correctly. Making sure to time your shots as the beam tosser hits them.

There's also a recursive damage glitch that lets this weapon insta-melt bosses alone up to X-tillions of damage. Video Here

SHIELD - IMPORTANT

Watts 4 Dinner - Siphon part, ideally 10 or 25%. Secondary part can either be that second Siphon part to become 25% or a Vagabond part for movement speed.

CLASS MOD

Instigator - Budget option. Go for points in Deft Hands and Concentrated Build Up.

Bombastic - Damage bonus while gliding. Extra damage for Beam Tosser Spam.

Passives to keep an eye out for:

Action skill Duration. Elemental Damage. All Damage. Movement Speed.

REPKIT

Triple Bypass - Accelerator. Cycle Action skill the fastest.

Font of Life - Elemental damage / Enrage / Splash. Full uptime on a Damage bonus.

AF1000 - Budget Font of Life.

Purple Order Repkit with two of the above damage passives.

ORDNANCE

Jakobs Grenade - Throwing knife with Penetrator Augment for Critical Hit chance.

Countermeasure - divider. Flares do Gun damage.

Firepot - Does Gun damage.

Waterfall - Artillery with ricochet augment. The ricochets do gun damage.

ENHANCEMENT - IMPORTANT

Maliwan MIXOLOGIST is mandatory for the UVH levels. The whole synergy for the build relies on this.

Toile - Has both Mixologist AND Transfuser. Mixo DoTs from Beam Tossers can be quite high, so spreading this about is good.

Passives to look for:

Gun Damage. Shotgun Damage. Equip Speed.

Firmware

Repkit & Ordnance

Repkit FirmwareSkillcraft

Ordnance FirmwareSkillcraft

Utilities

Class Mod FirmwareHigh Caliber

Shield FirmwareHigh Caliber

Enhancement FirmwareActive Fire

Enhancment or 'On shot' gun damage applies to Mixologist. So High Caliber 2 and Active Fire 1 will apply.

Final 2 Firmwares are open. Skillcraft 2 for the crit chance is recommended to maximise Juerga uptime.

Specialization

Specialization 1Now With Caffeine

Specialization 2The Best Defense

Specialization 3Contamination

Specialization 4Sturdy Stuff

Not many Specialisations apply to Mixologist. This is the best we've got.

Gameplay

Gameplay Loop. Slide -> ADS repeat every 6 seconds to maximise Cannon Damage. Do not activate BBD, just the passive is all we need.

For Bombastic. We'll Slide -> Jump -> Hold Glide -> ADS. Repeat upon landing.

Bossing. Burst DPS Activate Bullet-Buddy Deluxe to spam shoot your Beam Tosser for 2 seconds. Repeat OR swap to an element matched Devourer, and shoot that as your beams land. Stand back when shooting the Beam Tossers to give you time on the swap.