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Borderlands 4 Build

SWEEPER | Haruspex Melee Vex (LVL 60 UVH6)

presentationVex
End Game
presentationDead Ringer
Verified
Trending
Updated on Mar 23, 2026
Mar 23, 2026

Build Overview

(Mind)Sweeper Vex!

This build focuses on maximizing the effectiveness of Haruspex by combining it with Reverburnations and Bloodletter. It is also highly capable of utilizing Groundbreaker.

It lends itself well to being played as a gun hybrid with Mantra, since it can make up for some issues Haruspex may face.

  • Misericorde is the main class mod to push Haruspex further, but there's many options.
  • Pincushion is a choice of your preference, since it has its own strengths and weaknesses.

Phase Covenant governs melee gameplay on Vex, since it actually attunes Melee Attack and Melee Damage sources to the currently held gun element.

  • Check out the Mantrarmy build for a collection of gun-focused Mantra builds.
  • Check out the Hexblade build for a pure melee approach.

Strengths And Weaknesses

  • Reapers have great mobbing power, while Specters have immense Mortal Terror utility
  • Great mobbing sustain and damage
  • Great bossing damage
  • Minion AI
  • Haruspex can be a little janky

Build Variants

Default Sweeper variant.

  • Action Skill: Dead Ringer
    • Coven or Hellish Harvest
    • Grim Reaper

Skill Tree

Points Spent 0 / 59
LMB Allocate
RMB Unallocate
Dead Ringer
5/5
3/3
2/5
5/5
5/5
5/5
5/5
1/1

You can skip Pincushion if you don't like it.

The Fourth Seal

Sanguine Fiends

  • Excellent for sustaining the minions and Vex.

Fell Inscriptions

  • Applies its melee boost 2x to your Reapers, and once to Vex.

Blood Sacrifice

  • Helps accessing our kill skills on bosses even without Mortal Terror.

Grave Fiends

  • Very significant damage boost when considering the double (and further) dips we have access to.

Recurrence

  • Reaper melee attacks stack this quickly for us, as do our own through Haruspex and Mantra. Through our specializations this can feed back into more Skill/Melee damage.
  • The bonus shock from Watts 4 Dinner results in one new stack per attack.

Reverburnations

  • Absolutely bonkers skill. Effectively acts as one of the few multipliers we have access to in BL4, alongside some double and even triple dips it has.
  • Reverburnations gets its own triggers on Haruspex, Groundbreaker andWatts 4 Dinner.

Haruspex and Pincushion

Coven, Specters and Reapers

  • With Specters, Coven provides extra Crit Chance on all damage sources, which can contribute to Groundbreaker buildup.
  • With Reapers, Coven provides great sustain for specific encounters where you might find yourself wanting it.

Vexcalation

Guns and Needles

  • Helps Repkit uptime.

Grave Sights, Grave Implements, Grave Power and Mortal Terror

  • The excellent crit damage boost from Grave Sights is increased and supported by the other two skills. It will affect all of our bleeds, Haruspex and Reverburnations.
  • Grave Implements helps with Mantra damage and also feeds back into more melee and skill damage through specializations, affecting Haruspex, Bloodletter and Reverburnations.
  • Mortal Terror excellently supports kill skill Vex builds, and will help with resetting Haruspex cooldowns.

Bloodletter and Keen Mind

  • Bleed is bleed. It double dips skill damage if triggered by any skill source. Haruspex, Reverburnations and Groundbreaker can all cause bleeds of their own.
  • Keen Mind will affect most of our damage sources and increase Mortal Terror consistency, being a valuable boost.

Equipment

Weapons
Repkit & Ordnance
Utilities

WEAPONS

You want weapons that have Maliwan (Element Switch Underbarrel). Ideally, have these be many flavors of the Mantra.

Licensed Parts

  • Jakobs (Ricochet Accessory) is very strong: it enables ricochets and access to powerful enhancement effects.
  • Ripper (Charge Mag) is an extreme DPS boost, but is generally reserved for bossing due to the charge time and ammo inefficiency. The more fire rate PARTS a Mantra has, the quicker it will charge-up the Ripper magazine.
    • Mantra can roll both of these licenses at once.

Avoid most bladed weapons, except maybe for Bladed Maliwan Shotgun/Mantra. Those currently apply an extra 82.5% Melee Damage boost to your Melee Attack. However, they do have long recovery frames, which still makes them pretty meh to use.

Equip the weapons in the order most comfortable to you, and organize their modes in a way that has all your elemental matchups covered for Dead Ringer summoning, Phase Covenant attuned melee attacks and Groundbreaker.

Other Weapons

A Ripper Sniper with 'Target Marker' can be useful due to the significant debuff it provides.

If your 'melee philosophy' is open to experimentation, you can also use heavy-hitting underbarrels to build up Groundbreaker, like

REPKIT

Order Repkit, Triple Bypass and War Paint are all good choices of Repkit with their own relative strengths.

Look for these effects, or combinations of them:

  • Enrage (Experimental)
    • Enrage is highly recommended if you're looking to maximize damage, since it will apply to all damage and be double and triple dipped by Reverburnations into Bloodletter, and can go even further if you decide to use Groundbreaker.
  • Hard Hitter (Steroidal)
  • Elemental Affinity (Reactive)
  • Accelarator (Adrenalized)
  • Amp (Amplified) on any of these Repkits can be situationally useful if your self-imposed melee rules allow usage of heavy-hitting underbarrels for Groundbreaker.

ORDNANCE

Slippy

The Slippy gives us another way of accessing melee, and is excellent at building up Groundbreaker. It is also a safe way to burst Vile crystals enemies and some other types that you find to be very dangerous when at close distance. It will be attuned to Vex's current held element due to Phase Covenant.

It gets its own triggers of Reverburnations.

  • The bonus shock from Watts 4 Dinner gets its own Reverburnations, as does Infusion.

Look for a variant that has any of

  • Crit Chance
  • Nuke
  • +1 Max Charge

Then pick your preferred one.

Jakobs Grenade

The 'Crit Knife' Jakobs Grenade is great if you're choosing to lean more on the Mantra for your damage, since it helps it access crit damage alongside the boost from Coven + Specters during bossing.

'Supermassive' Jakobs Grenade or any other singularity-type grenade you like can be legitimately useful for grouping up enemies and enabling line-of-sight for the Misericorde ricochets.

CLASS MOD

For stat rolls on any class mod, all of these are acceptable:

  • Melee Damage; Skill Damage
  • Melee Crit Chance; Skill Crit Chance

Misericorde

Main class mod. Nice mobbing capabilities, turning Haruspex into a decently effective area-clearing tool. It also has some niche bossing applications due to its ricochets.

  • +5 Haruspex; +1 Reawakening; +1 Grave Sights
  • +5 Haruspex; +2 Reawakening or +2 Grave Sights

A Hunter Vex Class Mod with +5 Haruspex; +2 Recurrence or +2 Grave Assault is also a valid option or filler until you get a Misericorde.

Firedancer Vex Class Mod

This is excellent for bossing, and also more than adequate for mobbing.

  • +5 Reverburnations; +2 Fell Inscriptions or preference
  • This is usually the best damage you can get, but somewhat RNG-reliant. It's a nice swap-in for bossing if you prefer other class mods for mobbing.

Teen Witch

This is another excellent general use option. Enables perma 150% Amp Watts 4 Dinner for Mantraand doesn't need Siphon rolls. It sustains both damage and survival excellently through its very powerful legendary effect.

  • +3 Corporeal; +4 Blood Is Magic or +4 Grave Thirst
    • Pure damage from Blood Is Magic (it's actually Skill Damage) or some sustain for yourself and minions through Grave Thirst. The sustain can be helpful for overall action skill uptime.

Commander Vex Class Mod

Great general use choice. Infusion is a powerful skill and lets you double down on element-matching and enabled additional trigger sources of Reverburnations and Bloodletter.

  • +5 Infusion; +2 Any

Psion Vex Class Mod

Bleed is bleed. It can result in very high peaks and a lot of added damage.

  • +5 Bloodletter; +2 Material Components

SHIELD

Watts 4 Dinner

Siphon variant is the main shield choice for all the non-Teen Witch class mods.

Amp variant is the main shield choice if using Teen Witch.

  • This shield's bonus shock damage inherits the source type, and will apply to our melee damage sources. This means that on melee damage instances, including Haruspex, Slippy and Mantra, the Reverburnations skill can be triggered on your base damage and on the bonus shock from Watts 4 Dinner.
  • The minion drain from Dead Ringer can trigger the Siphon part of shields for you.

ENHANCEMENT

For stat rolls on enhancement, look for:

  • Shotgun Damage; Gun Damage
  • Weapon Equip Speed; Shotgun Equip Speed
  • Shotgun Crit Damage; Gun Crit Damage
  • Shotgun Splash Damage; Gun Splash Damage
  • Shotgun Mag Size; Gun Mag Size
    • The 'Gun Damage' and 'Shotgun Damage' boosts are very powerful for the Mantra.
    • The 'Shotgun Equip Speed' and 'Gun Equip Speed' boosts will stack, affect your melee recovery rate and also the speed of Maliwan mode switches.
    • The 'Shotgun Splash Damage' and 'Gun Splash Damage' boosts work on Melee Attacks and Groundbreaker, as long as you hold a weapon that fits the requirements. AVOID using both boosts together, they can cause weirdness and cancel each other out. While they're a relatively weak boost, I'm listing them here anyway since they're one of the few enhancement stat boosts for melee damage.

Quintain | Bounce Pass | Piercer Jakobs Enhancement

  • Very good choices with high general applicability.
  • Multistrike and Sequencer are also good, just beware that Specters can mess up the Sequencer effect.

Entropic | Devourer | Hard Charger | Free Loader | Short Circuit Ripper Enhancement

  • Some of these can be extremely powerful, however the RNG and overall inconsistency can be an annoyance. Experiment to your liking.

Lame | Mixologist Maliwan Enhancement

  • The weaker options of the bunch, but still serviceable.

Firmware

Repkit & Ordnance
Repkit FirmwareSkillcraft
Ordnance FirmwareSkillcraft
Utilities
Class Mod FirmwareReel Big Fist
Shield FirmwareReel Big Fist
Enhancement FirmwareSkillcraft

3/3 Skillcraft | 2/3 Reel Big Fist

  • Specters stack Skillcraft very quickly. The skill damage and crit chance are welcome benefits to Dead Ringer, Haruspex, Reverburnations, Bloodletter and Groundbreaker.

Specialization

Specialization 1I Am A Gun
Specialization 2A Honed Mind
Specialization 3Bear Arms
Specialization 4Groundbreaker

Melee Focus

I Am A Gun | A Honed Mind | Bear Arms | Groundbreaker

  • Access Groundbreaker for high bursts of damage.
  • Riddle You This is a valid alternative to A Honed Mind.

Riddle You This | I Am A Gun | A Honed Mind | Bear Arms

  • Bigger focus on boosting the damage of the minions, Bloodletter and Haruspex.
  • Contamination or The Best Defense are good alternatives to Riddle You This.

Mantra Focus

Riddle You This | I Am A Gun | A Honed Mind | Bear Arms

  • Contamination or The Best Defense are good alternatives to either of Riddle You This or A Honed Mind.
  • CQC is an option you can play with since the Mantra and Reapers trigger it.
  • Groundbreaker is also another option in case you want to perform a big melee hit after mag dumps.

Gameplay

These are just general tips to help you develop a sense of how to play the setups.

Mobbing

Start combat with Grim Reaper or save it for when you run into zero Dead Ringer charges.

Spawn your preferred mix of Specters and Reapers.

    • Specters have great Mortal Terror utility, while Reapers provide massive aggro relief and regen.
    • Pace your spawns instead of charge-dumping so that you avoid cooldown issues.

Haruspex and Pincushion have decent burst damage. Try getting closer to your targets to have more daggers successfully land, and aim for critical spots where feasible.

  • Misericorde ricochets are very powerful, but not super reliable. Even when they do happen, terrain might block their travel path.
  • 'Supermassive' Jakobs Grenade or any other singularity-type grenade you like can be legitimately useful for grouping up enemies and enabling line-of-sight for the ricochets.

Use your Repkit for heals and boosts.

Throw Slippy or shoot Mantra at extra dangerous or flying targets.

  • These are also your fastest method of stacking up Groundbreaker for a big melee hit.
  • Be wary of self-damage, especially on Slippy.

Bossing (Melee Focus)

Summon three Specters. If it's a longer fight with more than one phase, it's possibly best to not summon all three at once and instead pace the summons.

  • A mix of summons is also viable should you wish to have the health regen from Reapers.

Haruspex and Pincushion can be used at any points of the fight. The damage can be decent and generate powerful bleeds.

  • When using Misericorde, the Phase Daggers from Haruspex and Pincushion can insta-wipe bosses, but it's extremely reliant on chance. If you want to attempt that, allow adds to spawn before using the skill on the boss.
  • The ricochets are a potentially infinite dip that always uses the last ricochet's damage as base damage for the next, meaning the interaction relies on the ricochets going from boss > adds > back to the boss.

Repkit for any boosts it provides, then throw Slippy or 'Crit Knife' Jakobs Grenade and mag dump Mantra on the boss at the most opportune moment.

Melee/Slam for a big Groundbreaker once Slippy and Mantra have done most or all of their damage. You have a 5s window for Groundbreaker.

  • Depending on the fight, you might not want to use all Slippy charges at once. A well-placed throw followed by a melee/slam hit for Groundbreaker might be enough for 'Phase 1' of a boss, for example.

Bossing (Mantra Focus)

Mag dump while using the equipment/skill combination of

Optionally, if you have it slotted in your specializations, you can then Melee/Slam for a big Groundbreaker.

Notes

1. The Misericorde class mod omits values from its card description and has some quirks:

  • Special Effect - Phase Daggers gain a chance to Ricochet. Critical Hits grant a stack of Misery for a 20s duration, granting 1.4% Skill Damage. Misery can stack up to 50 times.
    • Phase Dagger critical hits don't stack Misery. You read that right.
    • The Ricochets are an infinite dip based on the previous Ricochet's trigger source final damage. This means it can also also dip down to 1 damage if it keeps getting retriggered by <100% bonus elements sequentially.
    • The Ricochet Chance is a measly 25%. Bonus elements like Watts 4 Dinner Bonus Shock and Infusion can provides additional ricochet chances, since they are source-inheriting.

2. Haruspex is Melee and Skill damage. It does not count as a melee attack for Groundbreaker, meaning it can't deliver it. It also can't stack it, due to being a Skill source. It does, however, count as a melee attack for Cursed Blade.

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