When Genone's health bar hits the final third, he'll become more aggressive, switching to close-range attacks and quick dashes. Don't try to Borderlands 4 Money tank these - keep your distance and finish him with sustained damage.

If you have action skills ready, this is the best time to unleash them. Chain your ultimate with grenades or high-burst weapons to drop him before he can trigger his overload self-repair phase. If you let him channel that, he'll recover around 15% of his total health.

Once you deplete his final bar, Genone collapses, and the containment system powers down. You'll then receive a transmission from Leopold, instructing you to shut down the facility using Zadra's Control Room Keycard - this concludes the Fault Hunting side mission.

Legendary Drops and Rewards

Genone has a respectable Legendary drop pool, though the items are on a moderate drop rate. Confirmed unique items include:

Genone's Pulse Driver (SMG) – A shock weapon that fires ricocheting energy bolts. Excellent for shield-stripping.

The Synthetizer (Grenade Mod) – Creates a temporary decoy drone that taunts enemies before exploding.

Neural Override (Shield) – Converts 20% of absorbed elemental damage into melee lifesteal for 5 seconds.

You'll also have a chance to collect high-rarity loot like Eridian components, Vault Keys, and endgame relic upgrades.

For the best farming results, replay the Fault Hunting mission or use the Fast Travel system to reset Genone's chamber and repeat the fight on higher Mayhem levels for improved drop chances.

Final Thoughts

The Genone encounter is a solid mix of tactical combat and endurance. While not the toughest boss in Borderlands 4, his combination of high shields, adaptive elemental attacks, and support minions keeps you on your toes. The key is patience: break his shields efficiently, manage his adds, and stay mobile.

With the right Borderlands 4 Gear and a bit of planning, Genone becomes not just another obstacle - but one of the best early-to-mid endgame Legendary farming bosses in the game.

The Core Observer is one of the most dangerous high-tech bosses in Borderlands 4, residing deep within the Blacklime Bunker of the Howl region. This mechanical menace serves as both a challenging fight and a reliable farming target for players looking to snag some rare Legendary weapons and items. This complete guide will walk you through how to find, fight, and efficiently farm the Core Observer-plus what exclusive loot you can expect for your trouble.

Core Observer Location

You'll find the Core Observer in The Howl, a southeastern zone within Kairos, located at the very end of the Blacklime Bunker. This heavily fortified facility is packed with advanced security drones and heavily armored defenses, so be ready for sustained combat even before you reach the boss itself.

Once you reach the deepest section of the bunker, you'll enter a massive circular chamber lined with power conduits and glowing machinery. The room locks down as the fight begins, and the Core Observer descends from above, scanning the area for intruders-you.

How to Defeat the Core Observer

At first glance, the Core Observer might seem like just another oversized drone-but underestimate it, and you'll quickly find yourself overwhelmed. The boss constantly summons smaller drones throughout the fight, each type dealing different kinds of elemental damage. Here's how to handle the encounter efficiently:

1. Manage the Ads

The Core Observer regularly spawns multiple "Corroborating Witnesses," smaller drones that come in Cryogenic (ice) and Radioactive (radiation) variants. These can chip away at your shields and health if left unchecked.

While their individual damage isn't high, their numbers make them dangerous. Use area-of-effect weapons like Torgue launchers or splash-damage grenades to clear them quickly. If you get downed, these minions also provide good Second Wind opportunities-so keep one alive if you need an emergency revive.

2. Target the Correct Weak Points

Unlike many other drone bosses, the Core Observer's critical weak spot isn't its eye. Instead, its underbelly serves as its true critical hit location. To expose it, bait the drone into hovering low or wait for it to pause mid-attack.

Aim your shots there with precision weapons like sniper rifles or Jakobs assault rifles for massive critical hits. Elemental weapons will further amplify your damage when paired with the right effects.

3. Use the Right Elements

The Core Observer has two distinct health bars-one green (armor) and one blue (shields). Matching your weapons to each phase is key:

Green Bar (Armor) → Use Corrosive weapons to melt through quickly.

Blue Bar (Shields) → Switch to Shock weapons once the armor is gone.

Elemental matching dramatically shortens the fight. If you have a weapon that can swap elements (like a Maliwan hybrid gun), this phase transition becomes much smoother.

4. Movement and Cover

The arena is circular with several raised platforms and energy conduits for cover. Keep moving clockwise or counterclockwise to avoid getting cornered. The Core Observer uses laser bursts and orb projectiles that can track your position. Strafe frequently and duck behind cover between attack waves.

If you're playing as a character with mobility abilities (like dash, teleport, or clone swaps), use them to cheap Borderlands 4 Money reposition after each drone wave.