☆ How Rush Saved Mercenary Day (Bounty Pack 1)
★ 12 active SHiFT Codes as of December 4, 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe

Callous Harbinger of Annihilating Death is a boss located in Craven's Nook
Order Bunker in Borderlands 4. See Callous Harbinger of Annihilating Death's drop rewards, location, and tips on how to beat Callous Harbinger of Annihilating Death in this guide.
List of Contents
| Callous Harbinger of Annihilating Death Drops |
|---|
Craven's NookOrder Bunker

Callous Harbinger of Annihilating Death is an optional boss encounter located in Craven's Nook Order Bunker, Heart of the Mountain in Terminus Range. The bunker becomes accessible after completing the One Fell Swoop main mission.
Callous Harbinger of Annihilating Death can also be repeatedly farmed after defeating it. Return to the location after the main mission and spend cash at the Moxxi's Big Encore Machine near the entrance of the boss arena to re-farm it.
| How to Beat Callous Harbinger of Annihilating Death |
|---|
|
|
Callous will periodically slam the ground, releasing a damaging shockwave across the arena. Time your jumps to clear the wave and avoid taking damage.
When Callous unleashes a barrage of projectiles, quickly move behind the elevated platform. Staying in cover prevents incoming damage and gives you safe openings to peek out and counterattack.
| Commands | PS5 | XBOX | PC |
|---|---|---|---|
| Dash | |||
Once the shield is depleted, Callous becomes more aggressive and will occasionally charge. Stay mobile and dash to the side to avoid taking heavy damage.
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|
| Point of Interest | Craven's Nook Order Bunker |
|---|---|
| Area | Heart of the Mountain |
| Region | Terminus Range |
| Weakness | Shock, Corrosive |

| Invincible Bosses | ||
|---|---|---|
| Bloomreaper | - | - |
| The Fadefields | ||
| Warden Scathe | Splashzone | Horace |
| The Oppressor | Bio-Bulkhead | Idolator Sol |
| Primordial Guardian Inceptus | Sidney Pointylegs | Sludgemaw |
| Voraxis | Foundry Freaks | Backhive |
| Mimicron | Core Observer | Minister Screw and Donk |
| Carcadia Burn | ||
| Moon-Maddened Callis | Callis, the Ripper Queen | Genone |
| Pango and Bango | Driller Hole | Rocken Roller |
| Skull Orchid | Primordial Guardian Radix | Fractis |
| Leader Willem | Rippa Roadbirds | - |
| Terminus Range | ||
| Saddleback and Immortal Boneface | Shadowpelt | Callous Harbinger of Annihilating Death |
| Bramblesong | Primordial Guardian Origo | Vile Protoype |
| Vile Lictor | Skyspanner Kratch | Divisioner |
| Dominion | ||
| Axemaul | Timekeeper | Primordial Guardian Timekeeper |
| Arjay | Bio-Thresher Omega | Directive-0 |
| Vile Ted | - | - |
Callous Harbinger of Annihilating Death Drops and Location



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