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Borderlands 4 Build

Simple & Clean Rafa / No Exploits / UVHM 6 / LVL60

Rafa

Peacebreaker Cannons

End Game

Verified

By ProbablyMortal

Updated on Mar 28, 2026

Mar 28, 2026

Build Overview

A build focused on being super strong while also allowing you to use almost any weapon effectively with.

This build works without needing any exploits or a crit knife. Highly scalable, requiring only 1-2 items to get it functioning, and multiple options to make it stronger and fit your preference.

The build can start functioning at around level 37, around 30 with a good mod.

Update 28/3/2026

New content means new guns and some new good choices.

Haemorrhage - Its damage bonus is actually surprisingly strong and is just a decent Vladof sniper all around. Very solid choice.
Scoot'n'Shoot - Probably the new best sticky gun in the game since we not only have ammo regen but also infinite ammo. This scales up insanely fast, with ripper mags I've easily applied hundreds of stickies within seconds. If you want an easy boss melter then there isn't much better than this for Rafa.
Flash Cyclone - A new favourite SMG for me, it's very strong for mobbing.

Strengths And Weaknesses

Effective with 95% of the guns in the game.
Flexible to fit multiple playstyles.
Amazing mobbing.
Amazing bossing.
Easy to use & build.

Bossing can take more than 6 seconds on some UVHM 5 bosses.
Requires a Dancer mod with Soltado to work.
Not very tanky without specific rolls on shields.

Skill Tree

Points Spent 0 / 59

LMB Allocate

RMB Unallocate

5/5

1/3

2/5

5/5

2/5

5/5

1/1

Augments

Typical Peacebreaker Rafa stuff.

Use Instinto for mobbing, it allows us to keep up our cannons infinitely.
Use Bullet-Buddy Deluxe for bossing to get infinite ammo.

You can use Volatile Hollowpoints if you want. It's better in some ways and worse in others but ultimately it's not a huge difference.

Red Tree

Shield Barriest - Useful for some survivability and our best choice to get more out of AMP shields. Particularly good with the Guardian Angel.
Juerga - Helps keep our action skill up.
Field Repairs - Useful if using Watts 4 Dinner, otherwise it can be moved to anything else.
Resiliencia - We get a ton of damage from our other skills and gear, so picking this up just adds some survivability. Resistance has a soft cap in the game, meaning we can't get over 100% resistance like you might hope. After 2/5 the resistance gain is small, so it's not really worth investing more than 3 at most in my opinion.
Temerario - Tons of damage and the handling is fixed with Al Centro and La Garza. With a perfect Dancer we reach 10/5.
Soltado - An obvious choice, it's build defining. If you're levelling you can actually leave this to later if you have Dancer but you do want to get 2/1 here.

Blue Tree

Las Jaras - Very nice with large mag or CoV guns. Just generally nice for us.
The Thrill - Gives a lot of fire rate which is a very nice DPS gain. Makes some slower weapons a lot nicer to use too.
Al Centro - Used to remove the negative handling from Temerario. High amounts of handling mean our weapons shots effectively become pinpoint accurate and hit targets instantly. This does have some weird bugs with some weapons but is ultimately worth it, especially with higher levels of Temerario.
Metal Management - We use this just for mobbing with Instinto. If you're fighting a large mob or a stronger enemy, we can get a small period of infinite ammo. This doesn't benefit us at all for bossing. Do not spam this often though, as Instinto actually stacks, meaning you'll eventually be draining so much action skill that you can't possibly upkeep it. Or just wait out its 8 second duration.
Brain Dump - This ends up giving us a lot of crit chance. With certain gear rolls you can actually achieve 105% crit chance on guns. If you're not lazy or just use a crit knife, you can move these points to anything else.
Jaque - Boosts all our Overdrive bonuses even more. Ends up being a 25% boost to our bonuses with Soltado active.
La Garza - A single point here effectively counters up to 6/5 Temerario. A second point here will completely negate any negative handling immediately.
Deadline - Some decent extra fire rate but the reload speed is the star of the show. Makes gameplay feel a lot smoother.

Level 51-60 (NEW)

With the new level cap we only change one thing from the LVL 50 build and that is El Soldado. Since we can reach Temerario now it gives us a better damage gain per point. This also allows us to reach Soltado and get that 2/1 bonus which is huge.

CYA - We don't really get much use with any other skill as much as this one. We're already soft-capped on damage resist and AMP shields make El Valiente get less value. Mostly just to reach the branches and have some more survivability.
Barrage - We also don't really get a choice here since Everdrive does absolutely nothing for us. The splash damage is very nice though, since it gives another big damage boost to stack on (up to 210%).
Devil-May-Care - 1 or 2 points here depending on preference as this can make you go too fast which might be annoying to some. This gives us move speed which the Mercurious will love and some HP Regen for extra survivability. Personally I put 2 here as the speed is fun and we don't really need more Gun Damage, we already have a lot. If you only want 1 point here, put an extra point into La Garza to counteract the handling from our next skill.
Temerario - 5 Just extra damage and the handling penalty doesn't really impact us at all with La Garza. We now reach 10/5 which ends up giving us up to 600% Gun Damage.
Soltado - We finally get 2/1. This is huge for us and is the most point efficient ability available to us. There is basically no reason to ignore this now that we can get it while maintaining blue tree.

Overdrive Bonuses

(Stat = Base | With Soltado 2/1 | With Soltado 2/1 + Jaque)

Shield Recharge Rate & Delay = 80% | 200% | 240%
Gun Damage = (Max 10/5 Temerario) 200% | 500% | 600%
Splash Damage = 70% | 175% | 210%
Ammo Regen = 5% | 12.5% | 15%
Fire Rate = 50% | 125% | 150% (+15% flat from The Thrill)
Reload Speed = 50% | 125% | 150%
Weapon Handling = 24% | 60% | 72%
Gun Crit Chance = 30% | 75% | 90%
Damage Resistance = 33.3% | 45.5% | 50%
Movement Speed = 74% | 185% | 222%

Put simply, at our strongest point we will get 6x the base value of the skill. This makes our 5/5 skills turn into 30/5 skills.

Equipment

Weapons

Repkit & Ordnance

Utilities

Guns

With a focus on being good with any gun, you can really use anything you like and the build will support getting the most out of them. There's basically no wrong choice when it comes to what weapons to use and the build can easy be tweaked to fit particular guns by just changing enhancements. Below are what I believe to be the best weapons for the build with the strongest weapons listed first.

Golden God - This thing is amazing for mobbing and bossing, has always been amazing for Rafa.
Shalashaska - Amazing weapon and easily my favourite gun currently. Probably our best mobbing weapon available and is still very good at bossing particularly large grounded targets.
T.K's Wave - With stickies it's the best sticky applier for the build, you will delete bosses.
Mercurious - Perfect for mobbing, still good with bossing. Great for those who love going fast and Zane from BL3.
Queen's Rest - Great for vile enemies, can be great for stickies, great for mobbing. Slept on by too many people.
Midnight Defiance - The best for room clearing or large amounts of enemies. Annoying to obtain.
Rainmaker - Very fun and another great sticky applier. Can easily room clear with Jakobs ricochet.
Wombo Combo - Great mobbing weapon and easy to obtain.
Complex Root - Requires Atlas tracking to fully shine but with it you can melt bosses.
Anarchy - Especially useful early on as we can get it's damage buff without any negative handling.

Rep Kit

Triple Bypass - An obvious choice for Rafa to keep up our cannons using Now With Caffeine. The rolls on this can be pretty much anything you want depending on your preference.
War Paint - A better choice for bossing. With good rolls on gear you won't end up needing it but it can be helpful, particularly if you're aiming to build up stickies.

Enrage on our rep kits actually isn't very useful to us. We get so much damage from Temerario that it barely benefits us. Going for Amp (Amplified) or Leech (Parasitic) is much more beneficial for us.

Ordinance

Our best choice by a large margin is the Firepot. It benefits from our gun damage bonuses and builds up stickies. You can chuck this at a tanky enemy, wait 2 seconds, swap/reload your gun and they'll be deleted along with most other things around them.

Crit Knife isn't worth it in the build, as we easily obtain a high crit chance regardless and in the future will be able to comfortably reach over 100%.

Class Mod

Dancer is too good to ignore, there's not a purple mod that can compete in this build. You will want to roll 1 Soltado and the rest in Temerario / The Thrill. Ideally you want to get 5 in Temerario but even just 3 points adds a lot of damage. Your best roll is Crit Damage, but Gun Damage is also good. Gun Crit is also nice, we can even hit 100% crit chance this way.

10/5 Temerario can boost up to 600% Gun Damage.

10/5 The Thrill can boost up to 150% Fire Rate.

Shield

We have 3 good options here. They all have pros and cons, but you can also just swap them out freely.

Note: If you want to use AMP, which you can and should try to with the build, do not go into Survivor more than necessary or at all since this will only boost capacity, not rate. Since we our using shield regen to get AMP shots, we want to have a good balance between recharge rate and capacity. The lower our capacity and higher our rate, the more AMP shots per second we can get.

Watts 4 Dinner - Our best DPS option. We want to roll at least 1 Siphon Tolling on it to be good. We can get overshield from 1 point in Field Repairs to have it for bossing before ever hitting anything. The perfect roll would be Siphon Tolling and AMP Synergized. The shock damage also applies to our Peacebreaker cannons. The recharge rate on the shield is always pretty low, so we don't get many AMP shots per second with this.
Super Soldier - A very nice option. The ammo regen can be very nice for small mag guns, movement speed and fire rate are added bonuses. Siphon Tolling and AMP Synergized are our best rolls here too. Without Siphon Tolling I wouldn't recommend this for mobbing in UVHM 3 or higher. The shield has a decent rate but also a large capacity, making it give a similar number of AMP shots per second to Watts 4 Dinner. This also means Survivor will negatively impact us even more, so do not go into Survivor if using this with AMP Synergized.
Guardian Angel - Specifically with 3 AMP Synergized. This shield has a crazy high recharge rate and somewhat small capacity. We already get 0 delay thanks to Shield Barriest and hugely increased recharge rate. As an example, a Guardian Angel with 3830 capacity and 4337/s recharge would be boosted up to 13011/s. With a 28% amp shot cost, we only need to recharge 1027 shield. This means we can get up to around 12.6 amp shots per second. This means there is a sweet spot with weapons that closely match our AMP shots per second. Guns that are too slow or too fast will benefit more from Watts 4 Dinner's bonus damage than our AMP. This is obviously also a very specific roll, unlike Watts 4 Dinner that can work just fine without AMP Synergized.

Which is best changes per gun, so a perfect Guardian Angel might not always be better than a Watts 4 Dinner depending on what you're using. Use whichever you prefer, have available, or whatever feels better to you; you'll still be doing crazy damage regardless.

For early game Firewerks is an obvious choice, it's an amazing shield for mobbing and super easy to obtain. The rolls on this don't matter much, just aim for the best missiles possible. Use this until you can get a decent shield listed above.

Enhancement

Following the focus on being able to use any gun, you can really use an enhancement you like depending on your guns.

The stat rolls also come to preference. The highest damage bonus would be going for Crit Damage. Gun damage is also good. Mag Size is a nice convenience choice. Fire rate is also nice but not very needed. Ultimately it comes down to what you're focusing on more.

Recommendations:

Jakobs Sequencer with Critical Damage - Our highest damage option. Makes our damage scale up to even crazier amounts. The description does lie a little though. It isn't Bonus Damage like it describes, it actually works more like Gun Damage does in enhancements. So it actually adds to our damage modifiers instead of dealing an additional instance of damage like other Bonus Damage skills.
Vladof Box Magazine with Mag Size or Fire Rate - With firmware we can get up to 70% mag size on all guns, 90% on Vladofs, which with Las Jaras can make our mags feel bottomless. Feels great for mobbing.
Quicksilver mod can give you 100% crit rate for free, allowing you to move points from Brain Dump. CoV Rafa feels fun to play and I'd suggest trying it at least once.
Studfinder is very nice for Torgue guns. Really good for mobbing and can be pretty nice for bossing. This wouldn't be as strong as the other options but is nice for Torgue enjoyers.

After some testing then further research, Jakobs Piercer enhancements crit does not add to skill tree crits. This means despite reaching 90% crit chance, the 20% from it is a separate roll, so we don't reach 110%. This makes purple Sequencer's our best choice.

Firmware

Repkit & Ordnance

Repkit FirmwareHigh Caliber

Ordnance FirmwareHigh Caliber

Utilities

Class Mod FirmwareDeadeye

Shield FirmwareDeadeye

Enhancement FirmwareDeadeye

Deadeye is incredibly good for our damage since our skill tree doesn't give us any boost to crit and we get a lot of bonus gun damage.

Your other firmware can be whatever you want but I'd suggest the following:

High Caliber would provide the biggest damage bonus.
Bullets to Spare is nice for playing with large mag guns.
Rubberband man is a good choice for survivability.
Airstrike if you use Torgue a lot can be nice. Also a decent 1/3 choice.

Specialization

Specialization 1Now With Caffeine

Specialization 2Riddle You This

Specialization 3In The Zone

Specialization 4Bullet Train

The 2 key ones are:

Now With Caffeine - Obvious choice for keeping up our action skill.
Riddle You This - Free damage essentially. Your Peacebreaker Cannons will also build this up, making it good even with slow weapons.

Your last two choice comes down to preference in gameplay.

Bullet Train - Some damage and allows you to sprint and shoot like Zane. Amazing with the Mercurious.
In The Zone - Also extra damage but requires you to aim, which might not be preferable.
I Am A Gun - Makes our cannons get boosted a lot. Very nice for mobbing, on lower difficulties you can clear mobs without ever even shooting your own guns. I used to always use this but I've found using Bullet Train is more useful.
One Shot, One Kill - Use this with slow but hard hitting guns like Truck.

Gameplay

1. Activate Peacebreaker Cannons

2. Shoot

Bloom Reaper Platinum UVHM6

So Bloom Reaper Platinum can actually be somewhat challenging, for 3 main reasons.

The RNG of Bloom Reaper's movement.
The invincibility windows during his phases.
The visual bug of his gas cloud lingering between kills, making the first phase more annoying.

The transitions are actually long enough to make us lose Peacebreaker Cannons...

So how do we get around this? We need 2 weapons; one for the first phase / mobs and one for bossing.

For the first phase/mobbing, the best choice is the Midnight Defiance by a big margin. If you don't have one, a good Queen's Rest or Golden God would be a good choice.
For bossing and the sake of consistency we want a good sticky weapon. The best option would be the T.K's Wave with sticky mag. Alternatively, the Queen's Rest is also a good option here if you rolled 17% stickies.

Spamming Firepot throughout the fight will also help with everything. Get ordinance cooldown for better damage and mob clearing. Get lifesteal for survivability.

The Strategy

At the start of the fight wait a little to activate Peacebreaker Cannons. As soon as the crystals become damageable focus one and then kill it's floaty thing.
Then focus on all the other crystals and ignore mobs. Make sure to dodge his big explosion attack if you see the red waves pulsing on the floor.
As soon as you get him to transition into his second phase, deactivate Peacebreaker Cannons and use your rep kit to get back our cooldown. Run around the arena and avoid mobs, waiting for him to jump down.
As soon as he becomes damageable activate Peacebreaker Cannons and swap to your bossing weapon and start shooting. Aim for his eye while he isn't doing the laser attack. If we do enough damage to it, we can rip it out and do a decent chunk of damage to him easily. Keep sticking him and get him to his next transition.
Once invincible, go to a platform next to him and start killing the mobs. This will keep our Soltado up and get most of our duration back. You can start getting stickies built up on him during this, just make sure not to reload or swap gun. A trick you can do is just waiting for your ammo to regen until you can fire an extra slot without reloading to infinitely scale their damage. (I.E. With T.K's Wave using 4 ammo per shot, wait until you have 5 before shooting to keep stacking)
Same as first phase. If you were pre-building stickies then you can just reload to win. If not, just use Instinto to get Metal Management working, build up as many stickies as possible and then kill it.

With this I've managed to consistently get Platinum in UVHM 6 without any game breaking exploits. The hardest part isn't the damage as much as it is the long invincibility windows which still count down your timer.