Follow this comprehensive guide to explore the best Onslaught build for Amon in Borderlands 4, featuring top skills, gear, weapons, and more.

In Borderlands 4, Onslaught is the red skill tree and one of the three main skill trees for Amon. To create the best Onslaught setup, you need to focus on maximizing melee damage and survivability. Additionally, you will also need to complement your skills with the right Augments, Capstone abilities, weapons, and more to get the best out of the Build. Below is a guide that will help you with the Amon Onslaught Build in the game.
Also Read: Borderlands 4: Down and Outbound Main Mission Guide
Pros and Cons of the Amon Onslaught Build in Borderlands 4

The points invested in skills like Discombobulate and Tritanium Knuckles will increase the melee damage to the next level. Additionally, the Build also takes care of Health regeneration, which makes it balanced.
Although the Build is nearly perfect, there are a few special considerations to keep in mind when using it. Since it is designed for close combat, you must manage range threats strategically. Additionally, we used Hoarcleave Capstone, which comes with a lower cooldown than the Molten Slam, but it can also be problematic.
Borderlands 4 Amon Onslaught Build Skill Tree Setup: Passives, Augments, and Capstones

Passives and Bonuses
Skill | Points Invested | Effect / Bonus |
---|---|---|
Discombobulate | 5/5 | +25% Melee Critical Hit Chance |
Tritanium Knuckles | 5/5 | +35% Melee Damage & +15% Skill Damage |
The Best Defense | 5/5 | Deal Melee Damage to earn 15% Overshield |
Wield the Storm | 5/5 | +30% Status Effect Damage & +30% Status Effect Duration |
Into the Fray | 5/5 | Increased Damage Dealt & Damage Reduction when close to enemy (Damage +30%, DR +55%) |
Brimming Vigor | 5/5 | +35% Max Health & +35% Melee Damage when Health is Full |
Bloodlust | 5/5 | On shield break or action skill activation, get +30% Reload Speed & +15% Lifesteal |
Scar Tissue | 4/5 | +32% Max Health & +32% Repkit Healing |
Gut Punch | 3/3 | Chance to apply Weakness (–40% enemy damage, +20% damage taken) via melee/ordnance |
Rearm | 1/3 | Melee attacks refill 20% of your gun ammo capacity |
The Thrill | 2/3 | Missing Health regeneration stacks when taking damage, % regen increases per stack |
Battleborn | 3/5 | Gun damage boost when at full health (doubled at max health) |
Augment Pyroclast
During the active stage of Onslaught, using Pyroclast for Amon will help you fully restore health and shield. Additionally, killing an enemy inside the Forgestorm restores Amon’s Action Skill duration and increases Forgestorm’s Damage.
Capstone Hoarcleave
Using the Hoarcleave Capstone for your Build replaces the Molten Slam. Therefore, you can take advantage of the lower cooldown of Hoarcleave than Molten Slam. Additionally, its ability to freeze enemies makes this Capstone an ideal choice.
Best Weapon and Gear Loadout for Amon Onslaught Build
Weapons
For Onslaught Amon, use the weapons that are a lethal force in close range. Therefore, it is best to use Shotguns, especially the Rainbow Vomit, which becomes an ideal choice due to its Color Spray trait. With its help, you become tough against all enemy types and also enjoy a quick reload.
Class Mod
Choose the mods that provide bonuses, such as boosting your melee damage and damage reduction. Additionally, focus on those that increase the duration of your active skill.
Ordnance
Although you can choose any Ordnance of your choice, selecting Rocket Launcher Heavy Weapon Ordnance works very well against most combats and enemies.
Firmware gear set
For the best Amon Onslaught Build, equip three pieces of Baker to increase the maximum health by twenty-five percent. In addition to that, Real Big Fist is also an ideal choice to boost the melee damage by fifteen percent. Finally, you need to use the Rubberband Man gear set so that Amon can survive more of the enemies’ hits because of its additional five percent damage reduction.
Best Specialization Options for Amon Onslaught Build in Borderlands 4
Since each respec will require 5,000 Eridium, you need to select the specialization carefully. To begin with, start with the Runner for more Melee Damage and the Bear Arms skill, which grants 50% more gun damage after melee. Additionally, invest in Survivor for extra health and damage reduction at full or near full health. Use the remaining points to increase the Gun Damage. That was all about Amon Onslaught Build Guide in Borderlands 4.

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