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Borderlands 4 Build

LazyData's Kill Skill Vex Build

Vex

End Game

By LazyData

Updated on Oct 25, 2025

Oct 25, 2025

Build Overview

A gun focused Vex build for strong DPS output, maximum DPS consistency, and strong health regen.

Scroll down for a leveling guide.

Strengths And Weaknesses

Very High DPS
Good survivability
High consistency, and longevity through future updates

Chugs ammo

Build Variants

Default

Bleed Variant

Ordnance Weapons

Skill Tree

Default

Bleed Variant

Ordnance Weapons

Points Spent 0 / 49

LMB Allocate

RMB Unallocate

1/3

4/5

5/5

3/3

5/5

3/3

This build is all out DPS. Maximising Vex's strong weapon oriented kill skills for maximum damage.

Gaining an unearthly amount of fire rate, using Target Prescience we can gain a large amount of crit chance to feed into Mortal Terror consistency. Mortal Terror gives us our kill skill stacks for hitting critical hits, so now we don't need kills to stack them up, a strong single target will do. The kill skills gained then feed into our fire rate and damage output.

With most damage multipliers being additive now, the importance of fire rate bonuses because ever greater, as fire rate will remain a functionally multiplicative damage bonus.

1 point in Grave Sustenance provides monumental uptime for Incarnate!

Equipment

Default

Bleed Variant

Ordnance Weapons

Weapons

Repkits & Ordnance

Utilities

Weapons:

Prioitise weapons with high pellets per second output in order to maximise Mortal Terror consistency and kill skill stacks.

Vladof SMGs and ARs are suited for this role.

Kaoson - Peak DPS. Needs to manually reload alot in mobbing

Wombo Combo- Absolute powerhouse. Primary mobbing option. Destroys Vile enemies.

Bod- Primary non Torgue Sticky bossing tool. Very high damage. Best with Sniper secondary mode.

Seventh Sense- A great pistol back-up, farm with the Ripper licensed magazine.

Bully- Another good pistol. ADS to spawn the Drone.

Convergence- Ripper Shotgun that creates projectiles on hit.

Sweet Embrace - A good shotgun as a backup when ammo gets low.

Birt's Bees - Funny, silly, can rolled with Daedalus part to change to pistol ammo for a 4th ammo type to burn through.

For bosses. Vladof SMGs with a secondary barrel attachment and torgue stickies, OR the legendary Kaoson are the preferred choices. With the Kaoson being an alround comfy weapon for all scenarios. Or Bod / Finnity XXX-L for non sticky options.

Rep Kit:

You rep kit will want to be spammable for fire rate uptime, while keeping an eye out for 'Gain 100% action skill cooldown rate on repkit use'. This is a vitally important part to get, even if it means using a low level one and sacrificing your healing.

Triple Bypass paired with Now With Caffeine can be used to immediatly recover your actionskill, allowing for alternative passives such as: Engrage, splash damage, go go gadget etc.

Classmod:

Prioritise passives- Fire rate, splash, crit, etc.

Teen Witch- Legendary option, use with an amp shield to maintain Amp shots.

Shield:

Firewerks - Early game farm, very effective for mob clear. Vibe Check Ricochets can cause its missiles to spawn in boss fights and hit the boss for high damage.

Super Soldier - Fire rate bonus while full. more brr more boss melting.

Watts 4 Dinner - Many hits many boosters. Good uptime on the +25% bonus. The AMP shield of choice for the Teen Witch synergy.

Ordnance:

Slippy with the CQC Specialisation for peak DPS.

Torgue Heavy Weapon or Maliwan Heavy Weapon. Heavy Ordnances paired with High Caliber Tier 3 and sustained Witchy Trigger Finger can be some of Vex's Highest Boss DPS vs non flying enemies. Jump up and shoot through the enemy to hit the floor behind them.

Jakobs throwing knife- Ideal parts: Enemies take 15% more damage. Hit enemies guarantee crits for 5s.

Firepot- Great grenade that launches torgue stickies.

Any good mobbing grenade to pick up add kills in boss fights or general gameplay.

Enhancement:

Vladof Enhancement of course. Either Gain 30% chance to fire an extra projectie or Gain 20% fire rate and 20% mag size. Or both if you get a lucky legendary!

Torgue Enhancement or @atlas work good for the Kaoson too.

Firmwares:

High Caliber 2

Deadeye 2

Bullets to Spare 1

Other options include: Atlas Infinum, Atlas E.X, Bullets to Spare 3.

Specializations

Default

Bleed Variant

Ordnance Weapons

Specialization 1Riddle You This

Specialization 2Bullet Train

Specialization 3Now With Caffeine

Specialization 4CQC

Other great options include:

The Best Defense

I Am A Gun

Compounding Afflictions

Overkill

Groundbreaker

Gameplay

Pop incarnate, use your rep kit and spam as many bullets as you can! Use Eldritch Blast to refill your mag so you never reload. Once Incarnate ends again use your repkit off cooldown to maximise the cooldown rate uptime.

Notes

The listed action skill is Incarnate. This gives access for Whitchy Trigger Finger for more gun damage and free gun reloads, and access to the capstone skill Vibe Check. It massively improves our DPS especially vs bosses. It can also restock ordnance weapons on the fly too!