Borderlands 4 has no shortage of bosses with unique mechanics, which also happen to be one of the best sources of loot. Bunkers are mini-dungeons that are hidden throughout Kairos, and one of them holds the boss Fractis. The boss fight is relatively simple, which makes it one of the best bosses to farm loot and legendaries. Let's check out how to find Fractis and what legendary loot it drops in BL4.

How to Drop Items and Weapons Borderlands 4
How to Drop Items in Borderlands 4

Players must manage their inventory and drop useless items and weapons to make space for better ones, here's how to do it on PC and consoles.

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Fractis Boss Location in Borderlands 4

Players can find Fractis inside The Crawlcroft Order Bunker, located in Grindstone of the Worthy area of Carcadia Burn region of Borderlands 4. The entrance to the bunker can be found inside a cave that has an entrance inside a Timekeeper's army base. So, reach the Echo Log's location marked on the map above and enter the base.

Fractis Boss Bunker Entrance Borderlands 4

Once players reach the area, head inside the enemy base installation, and look for the cave opening to the left. Once you've found it, ignore the enemies and just quickly jump down to discover the Crawlcroft Order Bunker.

Fractis Boss Use Locust Cannister Borderlands 4

The entrance is sealed with shield plating, similar to what Idolator Sol uses to shield himself from attacks. So, you'll need to grab a Locust container near the starting area of the cave and throw it at the bunker entrance to open the door up.

Reaching Fractis Boss Arena Borderlands 4

After entering the bunker, keep following the hallways till you enter an open area with a lot of enemies. You can completely ignore the enemies and make a run for the partially open doors across the hallway.

The doors will lead to a winding hallway, which will lead players into a small nerve center for the Timekeeper's forces. Head left into a corridor lit by red lights.

Opening to Fractis Boss Arena Borderlands 4

Head down the corridor and go under the stack of boxes to enter an enclosed room. Grapple to the top and keep following the hallways until you finally arrive in a room with vending machines. Just past this room, you'll enter Fractis' boss arena and start the encounter.

How to Beat Fractis Boss & All Legendary Drops in Borderlands 4

Fractis Boss Fight Borderlands 4

Once the Fractis boss encounter starts in Borderlands 4, it will cover its floating real body with golden armor (blue HP bar), which will be hard to penetrate with regular shots. You'll need to use weapons with shock attributes to melt through the golden armor. Once the armor is down, you can use incendiary weapons to quickly damage the real body of Fractis (red HP bar).

Players must maintain a safe distance from Fractis' attacks, and will need to constantly be on the move when it launches energy projectiles. After you get rid of the golden armor from the boss, a small drone will try to repair it and restore Fractis' blue HP bar. You'll need to destroy that drone to avoid prolonging the fight.

Some enemies will also spawn in the arena, but they'll be easier to deal with if you're maintaining some distance from Fractis. Once the Fractis is defeated, there's a chance it'll drop one of the following legendary loot in Borderlands 4.

Chuck (Assault Rifle)

Pitcher: A Tediore-manufactured assault rifle that you can throw at enemies, as it doesn't shoot bullets. Each throw costs 10 rounds of magazine.

UAV (Throwable/Grenade)

Death from Above: After throwing the grenade at a location, it'll call down missiles from the sky after a short delay. Yes, it also works indoors.

Protean Cell (Shield)

Direct Current: Ground Slam to toggle this effect. While enabled, it drains Shield over time to grant +40% Bonus Shock Damage, and Damage Taken passes through the Shield.

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Borderlands 4 Tag Page Cover Art
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Systems
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Top Critic Avg: 82 /100 Critics Rec: 88%
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Released
September 12, 2025
ESRB
Mature 17+ / Blood and Gore, Intense Violence, Sexual Themes, Strong Language, In-Game Purchases, Users Interact
Developer(s)
Gearbox Software
Publisher(s)
2K
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Borderlands 4 Boss Comments on Fan Negativity Ahead of Game’s September Launch
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WHERE TO PLAY

DIGITAL
Checkbox: control the expandable behavior of the extra info

Multiplayer
Online Co-Op, Online Multiplayer
Cross-Platform Play
Yes - all platforms
Franchise
Borderlands
Number of Players
1-4 players
Steam Deck Compatibility
Unsupported
PC Release Date
September 12, 2025
Xbox Series X|S Release Date
September 12, 2025
PS5 Release Date
September 12, 2025
Nintendo Switch 2 Release Date
October 3, 2025
Genre(s)
Looter Shooter, Action, Adventure, RPG
Local Co-Op Support
Yes
How Long To Beat
26 hours
X|S Optimized
Yes
File Size Xbox Series
44.46 GB