Borderlands 4 One Fell Swoop Main Story Guide / Walkthrough

The One Fell Swoop mission in Borderlands 4 serves as a pivotal main story quest, kicking off right after the Processing mission wraps up. To dive into this Borderlands 4 Guides essential, start by fast traveling to Zadra's Backup Plan. From there, head north toward the Synthetic area, where you'll need to navigate to Nav and tackle a series of sabotage tasks.

First up in the Borderlands 4 One Fell Swoop walkthrough is damaging the processing systems. This part involves interacting with panels after clearing out enemies, but the Borderlands 4 Quests highlight here is the tricky section where you open up the system and have to shoot the core inside. It's not immediately visible, so crouch to the left side to spot a small gap and fire through it to deal the necessary damage. If you're unsure about any step, rely on your Echo device—it consistently points out the next objective, whether it's a panel, button, or switch, making navigation straightforward throughout the mission.

Next, proceed to the Borderlands 4 Damage Processing Systems equivalent by sabotaging Sol's production facility, which follows a similar pattern of enemy encounters and interactions. Keep pushing forward to the Borderlands 4 find main ntework terminal objective, where you'll locate and access the central hub. All these elements lead into the Borderlands 4 reach airship goal, culminating in a boss encounter that demands quick reflexes.

During the boss fight, grab the locust canisters you've encountered in prior Borderlands 4 gameplay and hurl them at the enemy to strip away its defenses. Once exposed, unload your weapons until the armor regenerates, then repeat the canister-throwing and shooting cycle until the boss falls. With that done, escape the area and climb to the top of the building, only to watch the airship depart just ahead of you, triggering a tense chase sequence.

Quickly fast travel to the nearest available point before it gets disabled, hop into your vehicle, and race to the site. Upon arrival, you'll face waves of locusts attacking—prioritize reviving your allies if needed during this chaotic rush. Once secured, descend into the underground area, where debris blocks the fast travel station; use your grapple hook to clear it away.

Zadra then teleports in for a brief conversation, after which head back outside to find a grav lift positioned under the ship. Slip underneath to get lifted aboard for the Borderlands 4 enter airship phase. The interior features three corner sections arranged in a triangular layout—consult your Echo to determine the starting point, which reveals a button to press, exposing the critical systems.

Shoot the exposed system, then move to the next corner where the panel is already accessible and fire away, repeating for the third. With all systems destroyed, you'll drop out as the ship explodes, wrapping up the One Fell Swoop mission in explosive fashion.