Onslaughter Fire Amon Boss Farm Build
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The Onslaughter Amon build stacks gun and fire damage, with continuous burning status effects to make farming bosses easy for Amon in Borderlands 4. See the best build, skills, weapons, and gear to use for Onslaughter Amon, along with the best skill tree abilities and character playstyle.
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|---|---|
| Leveling Build | Boss Farm Build |
| Melee Build | Crucible Build |
| Amon Cosmetics | Amon Skill Trees |
Onslaughter Fire Amon Build Guide
| Jump to a Section! | |||||
|---|---|---|---|---|---|
| Skill Tree | Skill Progression | ||||
| Weapons | Class Mod | Enhancements | |||
Amon Best Skill Tree and Action Skill
| Skill Tree | Calamity |
|---|---|
| Action Skill: Onslaughter | |
The Onslaughter build uses the Calamity tree to stack incendiary damage, gun damage, and status effect boosts, massively increasing your fire weapon DPS. Activating the Onslaughter Action Skill also grants shield regeneration for survivability and bonus fire damage, often giving you enough burst to wipe out a boss in a single activation.
Amon Best Skills
| Jump to a Section! | ||
|---|---|---|
| Passive Skills | Skill Progression | |
| Augment | Capstone | |
Best Passive Skills
| Skill Tree | Priority Skills | ||
|---|---|---|---|
 Calamity |  What Burns Within Amon gains increased Incendiary Damage.  Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration.  Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack.  Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields.  Maiming Strike Gun Critical Hits have a chance to apply Weakness to enemies for a Duration. Weakened enemies deal reduced Damage, and take increased Damage. Weakness is affected by Status Effect Duration, and is itself considered a Status Effect.  Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately.  Dragon's Breath Whenever Amon Activates his Ordnance, his next Gun Shot is converted to Incendiary Damage, Staggering damaged enemies, and gaining increased Damage Dealt. Bosses cannot be Staggered, and Badasses have a chance to be Staggered.  Crackling Aegis Amon gains increased Status Effect Damage and Ordnance Damage based on his Shields. The fuller his Shield, the greater the effect.  Electrical Fire Whenever Amon Burns an enemy, he also Shocks them. Whenever Amon Shocks an enemy, he also Burns them. |
| Skill Tree | Priority Skills | ||
|---|---|---|---|
 Vengeance |  Wrath of Nature Amon gains increased Status Effect Application Chance and Cryo Effectiveness. This effect is Doubled when his Action Skill is active.  Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size.  The Thrill (Amon) Amon gains Missing Health Regeneration. Every time Amon takes or absorbs Non-Status Effect Damage, he gains a Stack of Resolute for a Duration, which increases this effect.  Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. |
The best skills for the Onslaughter build in the Calamity tree enhance status effects while stacking direct boosts to Gun and Incendiary damage.
From the Vengeance tree, prioritize The Thrill early for consistent health regeneration.
Recommended Skill Progression
| Recommended Skill Progression | |||
|---|---|---|---|
| What Burns Within Amon gains increased Incendiary Damage. Lvl 2 | What Burns Within Amon gains increased Incendiary Damage. Lvl 3 | What Burns Within Amon gains increased Incendiary Damage. Lvl 4 | What Burns Within Amon gains increased Incendiary Damage. Lvl 5 |
| What Burns Within Amon gains increased Incendiary Damage. Lvl 6 | Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration. Lvl 7 | Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration. Lvl 8 | Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration. Lvl 9 |
| Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration. Lvl 10 | Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration. Lvl 11 | Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack. Lvl 12 | Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack. Lvl 13 |
| Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack. Lvl 14 | Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack. Lvl 15 | Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack. Lvl 16 | Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields. Lvl 17 |
| Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields. Lvl 18 | Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields. Lvl 19 | Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields. Lvl 20 | Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields. Lvl 21 |
| Maiming Strike Gun Critical Hits have a chance to apply Weakness to enemies for a Duration. Weakened enemies deal reduced Damage, and take increased Damage. Weakness is affected by Status Effect Duration, and is itself considered a Status Effect. Lvl 22 | Maiming Strike Gun Critical Hits have a chance to apply Weakness to enemies for a Duration. Weakened enemies deal reduced Damage, and take increased Damage. Weakness is affected by Status Effect Duration, and is itself considered a Status Effect. Lvl 23 | Maiming Strike Gun Critical Hits have a chance to apply Weakness to enemies for a Duration. Weakened enemies deal reduced Damage, and take increased Damage. Weakness is affected by Status Effect Duration, and is itself considered a Status Effect. Lvl 24 | Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately. Lvl 25 |
| Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately. Lvl 26 | Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately. Lvl 27 | Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately. Lvl 28 | Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately. Lvl 29 |
| Crackling Aegis Amon gains increased Status Effect Damage and Ordnance Damage based on his Shields. The fuller his Shield, the greater the effect. Lvl 30 | Crackling Aegis Amon gains increased Status Effect Damage and Ordnance Damage based on his Shields. The fuller his Shield, the greater the effect. Lvl 31 | Crackling Aegis Amon gains increased Status Effect Damage and Ordnance Damage based on his Shields. The fuller his Shield, the greater the effect. Lvl 32 | Dragon's Breath Whenever Amon Activates his Ordnance, his next Gun Shot is converted to Incendiary Damage, Staggering damaged enemies, and gaining increased Damage Dealt. Bosses cannot be Staggered, and Badasses have a chance to be Staggered. Lvl 33 |
| Dragon's Breath Whenever Amon Activates his Ordnance, his next Gun Shot is converted to Incendiary Damage, Staggering damaged enemies, and gaining increased Damage Dealt. Bosses cannot be Staggered, and Badasses have a chance to be Staggered. Lvl 34 | Electrical Fire Whenever Amon Burns an enemy, he also Shocks them. Whenever Amon Shocks an enemy, he also Burns them. Lvl 35 | The Thrill (Amon) Amon gains Missing Health Regeneration. Every time Amon takes or absorbs Non-Status Effect Damage, he gains a Stack of Resolute for a Duration, which increases this effect. Lvl 36 | The Thrill (Amon) Amon gains Missing Health Regeneration. Every time Amon takes or absorbs Non-Status Effect Damage, he gains a Stack of Resolute for a Duration, which increases this effect. Lvl 37 |
| The Thrill (Amon) Amon gains Missing Health Regeneration. Every time Amon takes or absorbs Non-Status Effect Damage, he gains a Stack of Resolute for a Duration, which increases this effect. Lvl 38 | Wrath of Nature Amon gains increased Status Effect Application Chance and Cryo Effectiveness. This effect is Doubled when his Action Skill is active. Lvl 39 | Wrath of Nature Amon gains increased Status Effect Application Chance and Cryo Effectiveness. This effect is Doubled when his Action Skill is active. Lvl 40 | Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size. Lvl 41 |
| Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size. Lvl 42 | Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size. Lvl 43 | Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size. Lvl 44 | Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size. Lvl 45 |
| Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. Lvl 46 | Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. Lvl 47 | Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. Lvl 48 | Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. Lvl 49 |
| Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health. Lvl 50 | |||
From Levels 1~35, focus on stacking points into gun, incendiary, and status effect passives, rushing toward the third Calamity branch to unlock its Augment and Capstone. With these passives in place, you can start effectively soloing bosses for farming.
From Level 36 onward, invest in the Vengeance tree to improve survivability while further boosting DPS through enhanced status effects, magazine size, and gun damage.
Amon Best Augment
 Fulminating Fist
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||
| Tree |
Calamity
(Branch 3) |
|
|---|---|---|
| Effect | ||
| Amon gains increased Status Effect Chance while Onslaughter is active. Pressing Action Skill launches a concentrated Lightning Wave that deals Shock Melee Attack Damage to enemies it passes through. | ||
Pick up Fulminating Fist to increase Status Effect Chance while Onslaughter is active, enabling more elemental procs for significant damage-over-time. It also converts the fist into a ranged lightning attack, making it useful against shielded enemies.
Amon Best Capstone
 Stormcutter
|
||
| Tree |
Calamity
(Branch 3) |
|
|---|---|---|
| Effect | ||
| Molten Slam is now Stormcutter. Press and hold Action Skill to swing a Massive Forgesword, launching a Forgewave that deals Shock Melee Damage to all enemies it passes through. Restore Action Skill Cooldown, Action Skill Duration, and Ordnance Cooldown for each enemy hit. | ||
Stormcutter is a great tool for cutting through boss and enemy armor while also reducing Onslaughter’s cooldown or extending its duration if already active.
Amon Best Onslaughter Weapons
Best Manufacturer for Onslaughter Amon: Ripper
Ripper guns that apply fire status effects are excellent for this build, offering a rapid rate of fire after a short spin-up that melts through enemies and can beam down bosses with sustained fire.
Best Primary Weapon: Incendiary SMG
SMGs are ideal for Onslaughter Amon, offering rapid fire, constant DPS, and great mobility for run-and-gun play. Use elemental variants, especially incendiary for good damage even at range.
Elemental Weakness Chart and Damage Guide
Best Secondary Weapon: Incendiary Shotgun
When fighting bosses or mobs on the ground, get in close with an Incendiary Shotgun to deal massive burst damage while applying strong burn effects for sustained DPS.
Amon Best Onslaughter Class Mod
The Melting Furnace Legendary Class Mod is the best option for this Amon build, significantly boosting your Incendiary output. It can be farmed as a drop from Idolator Sol.
Before this, you can also use normal Class Mods that add skill points in the Calamity tree and provide passive boosts to status effect damage and gun damage.
Amon Best Enhancement Mods
| Enhancement | Effects |
|---|---|
| Ripper Enhancement |
・High Roller - Guns with Ripper-licensed parts increase Gun Damage by 2% for each consecutive shot fired, for a Maximum 25 stacks. ・Gun Status Effect Damage - Increased by +25%. |
Equipping a Ripper Enhancement with the High Roller effect is best for damage. Ones with Gun Status Effect Damage or raw Gun Damage increases are ideal as well.
Amon (Forgeknight) Boss Farming Guide
Use Onslaghter Action Skill Before Fights
At the start of boss fights, activate Onslaughter to gain a massive boost in incendiary damage, status effect application, and shield regeneration, allowing your weapons to burst down enemies much faster.
Continously Shred Bosses With Burn Damage
Burn damage is the key to this build, so keep up constant fire on the boss, focusing especially on critical hit spots to maximize your DPS. With incendiary status effects stacking rapidly, the damage will stack up fast.
Use Backup Weapons for Shield and Armor
If a boss is resistant to fire and has shield or armor health bars, switch to the appropriate element to counter them effectively. While this build excels with incendiary damage, it still delivers strong status effect damage with other elements, though you won’t burn through shielded or armored bosses as quickly as those with red health bars.
Elemental Weakness Chart and Damage Guide
Onslaughter Fire Amon Build Overview
Onslaughter Fire Amon Build Summary
| Skills | |||||
|---|---|---|---|---|---|
| Onslaughter |
What Burns Within Amon gains increased Incendiary Damage.
Wrath of Nature Amon gains increased Status Effect Application Chance and Cryo Effectiveness. This effect is Doubled when his Action Skill is active.
Scorched Kairos Amon gains increased Ordnance Damage and Magazine Size.
The Thrill (Amon) Amon gains Missing Health Regeneration. Every time Amon takes or absorbs Non-Status Effect Damage, he gains a Stack of Resolute for a Duration, which increases this effect.
Battleborn Amon gains increased Gun Damage the more Full his Health. This effect is Doubled while Amon is at Maximum Health.
Wield the Storm Amon gains increased Status Effect Damage and Status Effect Duration.
Bullet Storm Whenever Amon applies a Status Effect, he gains increased Gun Damage for a Duration. This effect can stack.
Burning Ramparts Amon gains increased Fire Rate and Status Effect Chance the more full his Shields.
Maiming Strike Gun Critical Hits have a chance to apply Weakness to enemies for a Duration. Weakened enemies deal reduced Damage, and take increased Damage. Weakness is affected by Status Effect Duration, and is itself considered a Status Effect.
Catastrophe Whenever Amon applies Shock to an enemy, he gains increased Critical Hit Chance for a Duration. Whenever Amon applies Burning to an enemy, he gains increased Critical Hit Damage for a Duration. Both effects stack separately.
Fulminating Fist Amon gains increased Status Effect Chance while Onslaughter is active. Pressing Action Skill launches a concentrated Lightning Wave that deals Shock Melee Attack Damage to enemies it passes through.
Dragon's Breath Whenever Amon Activates his Ordnance, his next Gun Shot is converted to Incendiary Damage, Staggering damaged enemies, and gaining increased Damage Dealt. Bosses cannot be Staggered, and Badasses have a chance to be Staggered.
Crackling Aegis Amon gains increased Status Effect Damage and Ordnance Damage based on his Shields. The fuller his Shield, the greater the effect.
Electrical Fire Whenever Amon Burns an enemy, he also Shocks them. Whenever Amon Shocks an enemy, he also Burns them.
Stormcutter Molten Slam is now Stormcutter. Press and hold Action Skill to swing a Massive Forgesword, launching a Forgewave that deals Shock Melee Damage to all enemies it passes through. Restore Action Skill Cooldown, Action Skill Duration, and Ordnance Cooldown for each enemy hit.
|
||||
| Best Weapon Type | Best Manufacturer | ||||
| SMG | Ripper | ||||
This build relies on Elemental Status effects, namely Incendiary for max damage. The skills in the Calamity tree stack up the damage boosts to your guns and fire, and turns Onslaughter into a great active buff to your shots.
For weapons, Elemental Ripper SMGs and Shotguns are best, preferably with fire properties. Be sure to carry backup weapons in Corrosive or Shock to deal with any armor you may come across.
Best Onslaughter Amon Build Playstyle
Optimized for Boss Farming
This Amon build is specifically designed for Boss Farming, putting heavy investment in Amon's Incendiary and Status Effect damage.
Through our testing, Normal Bosses in Hard difficulty can be cleared in less than 1 minute under optimized conditions.
Great Single Target Damage, Lesser Mob Clear
This build specializes in single-target burst DPS. It can still be used for leveling and clearing the story, but it's weaker at clearing large groups of powerful enemies, especially the large number of armored Order enemies.
If you are facing difficulties in using this build for leveling, you can try a more survivable build. Our Amon leveling build is more tanky, has powerful Cryo AoE for mobs, and solid boss clearing.
Best Amon Build and Leveling Guide
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|---|---|
 Vex |
|
 Rafa |
|
 Amon |
Onslaughter Fire Boss Farm |
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How are you supposed to get the branch three capstone if the levelling guide recommends purchasing skills from branch two?
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Onslaughter Fire Amon Boss Farm Build
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maybe just give us a screenshot of the actual build? i dont care for a recommended skill path... just screenshot it so i can click and get to it...