In Borderlands 4, the One Fell Swoop quest is plagued by a bug preventing players from interacting with Zadra. This glitch leaves the mission incomplete, often triggered by closing the game during a cutscene or mid-progress. Players have reported Zadra’s collision box disappearing, with the quest marker remaining stuck indefinitely.
Fixing the One Fell Swoop Quest Bug
The most consistent solution involves creating a new character to reset the mission flags. If unsuccessful, alternative fixes include multiplayer resets or altering your travel path. Below are detailed steps for each method.
Method 1: New Character Reset
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Create a new Vault Hunter and skip the prologue.
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Load into the game, then fully restart Borderlands 4.
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Return to your primary character—the cutscene should trigger automatically, advancing the quest.
Pro Tip: Avoid skipping the new character’s beach cutscene, as many players found this critical for the fix.
Method 2: Matchmaking Retry
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Use the main menu’s Matchmaking feature.
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If nothing happens, exit to the menu and repeat.
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Continue until dialogue plays and the quest progresses.
Method 3: Vault Progress Trigger
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Collect three Vault Keys and complete the Vault of Inceptus.
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Fast travel back to Zadra’s lab to resume the mission.
Method 4: Waterfall Cave Path
Avoid fast traveling directly to Zadra. Instead, navigate through the waterfall cave entrance—this alternate route often forces the quest to update.
Method 5: Multiplayer Workarounds
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Swap hosts if co-op gameplay caused the bug.
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Join a friend who’s completed the mission to update your save file.
FAQ
Why can’t I talk to Zadra?
Closing the game during a cutscene or dialogue often breaks her interaction trigger.
Easiest fix?
New character creation followed by a restart is the most reliable method.
Do I need to watch the new character’s cutscene?
Yes—skipping it may prevent the fix from working.
Can multiplayer help?
Switching hosts or joining a friend’s completed session can force progression.