Borderlands 4: Drilla Killa Boss Location on Akela Island

Drilla Killa is one of the Occupied Sector targets in Borderlands 4, and the marker on the map only tells you half the story. The activity sits on Akela Island, but the arena itself is buried under it, at the end of a cave run that ends in a drop you cannot walk back up.

Quick answer: Fast travel to Akela Island on the far west side of the Bagheera Range, enter the cave system, fight through to the security doors and ammo vending machines, then drop into the flooded cavern below to spawn Drilla Killa.

Drilla Killa location: Akela Island, Bagheera Range

Open the map and pull the camera to the far west edge of the Bagheera Range. Akela Island is the landmass out there, and the Drilla Killa activity marker sits on it, flagged as an Occupied Sector. Providence Island is the neighboring landmass, so if you are looking at that one, you have gone too far across.

Detail	Value
Region	Bagheera Range
Area	Akela Island (far west)
Activity type	Occupied Sector
Arena	Flooded cavern beneath the cave system
Enemies on the way	Caustic Pulpin, Reaper
Boss level seen	71

Note: the level you see on the boss follows the game’s scaling, so a level 71 Drilla Killa is what an endgame character runs into rather than a fixed number for everyone.

How to reach the Drilla Killa arena

Set the Drilla Killa marker as your waypoint from the map screen. The objective indicator on your HUD and mini-map does the navigation work from here, which matters because the cave splits into platforms and drops that all look alike.

Enter the cave mouth on Akela Island and push straight in. The first stretch is where Caustic Pulpin and Reaper enemies start swarming, so keep an eye on your magazine between fights rather than after them.

Gameplay view inside the Akela Island cave with the reload prompt highlighted on screen — The reload prompt flashes as you push into the Akela Island cave system. Image: Gearbox Software

Follow the cyan objective marker forward across the platform sections. Loot scattered along the ledges is worth grabbing on the way through, since you will want a full ammo pool before the drop.

Cyan objective marker on the Akela Island route with loot scattered on the ground ahead — The cyan marker points the way through Akela Island, with loot dotted along the path. Image: Gearbox Software

Take the path down into the lower caves and keep moving. Sliding through this stretch is faster than clearing it, and the yellow objective marker keeps you pointed at the right tunnel.

Yellow objective marker guiding the player through the lower cave tunnels on Akela Island — The yellow marker in the lower caves keeps you on the route down. Image: Gearbox Software

Open the metal security doors at the end of the corridor. This is the last interior section before the arena, and it opens into the vending machine area.

Player aiming at the central doorway leading to the vending machine area before the boss arena — The central doorway past the security section leads to the vending machines. Image: Gearbox Software

Drop into the flooded cavern past the vending machines. Landing in the arena is what spawns Drilla Killa, and there is no walk-back, so treat the ledge as a point of no return.

Restock at the Lite Vending Machine before the drop

The last thing you pass before the arena is a Lite Vending Machine, and it is the only ammo source on the route. A full ammo refill runs $425, which is cheap insurance against running dry halfway through the fight.

Sweep the chained crates and containers around this area while you are here as well. Once you jump down, the vending machine is out of reach until the encounter is over.

Glowing chained crate highlighted on Akela Island as the player aims toward it — A chained crate glows along the route, worth cracking before the arena drop. Image: Gearbox Software

How to confirm the boss fight has triggered

The map screen flips from the cave layout to the boss arena as you approach the final ledge, which is your signal that you are in the right place. The moment you land in the flooded cavern, Drilla Killa spawns and its name and health bar appear on screen.

If nothing happens, you have not dropped in yet. The encounter does not start from the vending machine level or from any of the upper platforms, only from inside the cavern itself.

Refighting Drilla Killa with Moxxi’s Big Encore

Bosses in Borderlands 4 can be respawned on the spot through Moxxi’s Big Encore machine, which charges a percentage of your cash instead of sending you back through the whole cave run. Some Encore machines show up as soon as the boss dies, while others only appear after you leave the area and return.

In Ultimate Vault Hunter Mode, one of the machines is red rather than white. That version spawns a tougher “Big Encore” variant of the boss, costs Eridium instead of cash, and can only be used once per week, but it carries extra rewards for the trouble.

Once you know the route, the whole approach takes under two minutes, and the vending machine sitting right before the drop makes Akela Island a reasonable spot to sit and farm rather than a one-and-done detour.