What to know
- Driller Hole is a mid-game story boss encountered during the "Unpaid Tab" mission in Queen's Cradle, dropping dedicated legendaries with corrosive themes.
- Use the arena's central structure for cover against its incendiary blasts and flanking Rippers; shock or cryo weapons counter its corrosive attacks effectively.
- Farm repeats via Moxxi's Encore Machine for boosted legendary drop rates, costing eridium that scales with your level.
- Dedicated drops include the Corrosive Bore Rifle for piercing damage and the Acidic Class Mod for enhanced elemental builds, alongside world pool loot.
As you push through Borderlands 4's chaotic campaign on the planet Kairos, battles like the one against Driller Hole stand out for their high-stakes loot potential. This boss, a massive drilling machine infused with corrosive horrors, guards some of the game's most sought-after legendaries early in your Vault Hunter journey. You'll face it in an underground arena teeming with Rippers, but with the right strategy, you can turn the tide and walk away with gear that powers your build for tougher challenges ahead.
All Driller Hole loot drops
Keep in mind this is a chance loot, you may or may not find these items.
| Item type | Item name | Notes |
|---|---|---|
| Legendary Weapon | Katagawa’s Revenge | One of the boss’s signature legendary drops. |
| Legendary Weapon | Fuse | Dropped alongside other legendaries, useful for mid- to late-game builds. |
| Legendary Weapon | G.M.R | Another exclusive legendary tied to Driller Hole’s loot pool. |
| Other Loot | Standard rare/epic gear | Includes shields, grenades, class mods, and relics from general loot pool. |
| Currency | Eridium, cash | Common reward alongside gear drops. |
Driller Hole map location
Driller Hole appears as the 10th story boss in Borderlands 4's 15-boss lineup, tied to the main mission "Unpaid Tab." This quest takes you beneath Queen's Cradle in the Carcadia Burn region, a northwest desert area filled with jagged cliffs and mutated threats.
To reach it, progress through earlier missions like those involving Warden Scathe and Splashzone in the Fadefields starting zone. Once in the prison, drop into the central pit to trigger the fight—expect waves of Ripper minions alongside the boss's heavy attacks.
How to farm Driller Hole efficiently
Step 1 – Unlock and access the Unpaid Tab mission
Progress through the main story until you reach the Unpaid Tab mission, which takes you beneath Queen’s Cradle.
Step 2 – Prepare your build
Equip splash-resistant shields and crowd-control weapons, since Driller Hole uses incendiary zone attacks and spawns Rippers.
Step 3 – Defeat Driller Hole
Stay mobile to avoid its blasts, clear out Rippers quickly, and use the central arena cover to survive the fight.
Step 4 – Check loot and reset
After the fight, pick up any legendary drops. Reset or replay the mission to farm again.
Step 5 – Optimize farming runs
Fight at higher difficulty if possible, as this improves legendary drop rates. Use any modifiers or boosts that enhance loot chances.
Tips for the Driller Hole fight
Post-campaign, Moxxi's Encore Machine lets you refight Driller Hole without reloading saves, a game-changer for dedicated farming. Located near the Queen's Cradle entrance, it costs eridium scaling from 5,000 at level 20 to 30,000 at max level. Activate it after your first win; weekly "Big Encore" variants boost legendary rates by 50% but require more resources.
To optimize:
- Run on Hard or TVHM for 1.5x drop multipliers.
- Co-op with friends divides costs and speeds kills.
- Track drops via the in-game log; expect 10-20 runs for a specific legendary. Rifts in Carcadia Burn occasionally spawn Driller Hole variants with similar pools, offering free farms if you spot the opalescent bubbles.
Wrap-up: Why target Driller Hole
Farming Driller Hole is worthwhile if you’re chasing its exclusive legendary weapons: Katagawa’s Revenge, Fuse, and G.M.R. These items aren’t easily found elsewhere, making repeated runs a strong option for loot hunters.
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