Unpaid Tab is the 9th main mission in Borderlands 4 (BL4). This walkthrough will guide you through all objectives of the Unpaid Tab Main Quest.
- Starting Location: Kairos > Carcadia Burn > Ruined Sumplands
- Quest Giver: Levaine
- Unlock Requirement: having finished Main Quest 8: Siege and Destroy
- Recommended Level: 13
- Reward: XP, Money, Eridium, Rare SMG & SICKO-4 ECHO-4 Frame
- Quest Description: type the blurb from left side of quest log
Objectives:
- Talk to Leader Yorick
- Find core electrical relay
- Repair core electrical relay
- Activate core power
- Repair Carcadia & Restore fast travel station
- Repair Carcadia & Restore all vending systems
- Repair Carcadia & restore water
- Reach Firedust Bridge
- Lower first bridge
- Lower second bridge
- Destroy beams
- Reach other side
- Find Zane & Reach Zane’s last location
- Find Zane & Assist Quent
- Find Zane & Talk to Quent
- Find Zane & Reach old refinery
- Find Zane & Use intercom
- Find Zane, Enter old refinery, Reach western ripper camp & Reach eastern ripper camp
- Find Zane, Enter old refinery, Reach western ripper camp & Kill eastern camp leader
- Find Zane, Enter old refinery, Reach western ripper camp & Take ECHO log
- Find Zane, Enter old refinery & Reach western ripper camp
- Find Zane, Enter old refinery & Kill western camp leader
- Find Zane, Enter old refinery & Take ECHO log
- Find Zane, Enter old refinery & Reach side entrance
- Find Zane, Enter old refinery & Use intercom
- Find Zane & Enter old refinery
- Find Zane
- Kill rippers
- Kill Security Jones & Kill reinforcements
- Hack jamming device
- Destroy jamming device & Reach significant height
- Destroy jamming device & Crush jamming device
- Kill rippers
- Reach lower level
- Kill rippers
- Find prisoners
- Find Quent
- Kill rippers
- Kill Driller Hole
- Save Quent or Lose Quent (+ Destroy ripping machine if you lose Quent)
Starting Location: Unpaid Tab
Talk to Leader Yorick
Talk to Yorick on the plaza.
Find core electrical relay
Follow the quest marker to find the relay nearby.
Repair core electrical relay
To repair the delay, shoot the orange bubble around the area, there are a total of 11 bubbles.
Activate core power
Now activate the relay on the terminal.
Repair Carcadia & Restore fast travel station
Now leave the relay and head opposite it and interact with the machine to repair the fast travel station.
Repair Carcadia & Restore all vending systems
Head inside the main building and interact with the terminal.
Repair Carcadia & restore water
Now get outside again and head to the water valves. Interact with all three of them.
Reach Firedust Bridge
Follow the marker to reach the bridge.
Lower first bridge
Go down the left side of the bridge to reach the first terminal.
Lower second bridge
Now jump over to the other side and interact with the second terminal.
Destroy beams
Jump to the other side again and shoot the two beams.
Reach other side
Get into your vehicle and drive to the other side.
Find Zane & Reach Zane’s last location
Just move forward a little bit.
Find Zane & Assist Quent
Kill all enemies in the area to save Quent.
Find Zane & Talk to Quent
After killing the enemies, talk to Quent who sits behind some metal sheets at the road.
Find Zane & Reach old refinery
Follow the quest marker to the refinery.
Find Zane & Use intercom
Use the intercom in front of the refinery.
Find Zane, Enter old refinery, Reach western ripper camp & Reach eastern ripper camp
Head to the eastern camp first.
Find Zane, Enter old refinery, Reach western ripper camp & Kill eastern camp leader
At the end of the camp you will find the leader, kill him to get his echo.
Find Zane, Enter old refinery, Reach western ripper camp & Take ECHO log
After killing the leader pick up the ECHO.
Find Zane, Enter old refinery & Reach western ripper camp
Now folllow the marker to the western camp. You will have to get through another smaller camp first and pull yourself up at the end with the grappling hook to reach the western ripper camp.
Find Zane, Enter old refinery & Kill western camp leader
Here kill the second leader.
Find Zane, Enter old refinery & Take ECHO log
After killing the leader pick up the ECHO.
Find Zane, Enter old refinery & Reach side entrance
Follow the quest marker to the side entrance.
Find Zane, Enter old refinery & Use intercom
Then use the intercom in front of the entrance.
Find Zane & Enter old refinery
Enter the now-open refinery.
Find Zane
Follow the path inside until you find Zane.
Kill rippers
Kill all enemies once you found Zane.
Kill Security Jones & Kill reinforcements
After a while, Security Jones and reinforcements will appear. Kill them all.
Hack jamming device
Interact with the jamming device.
Destroy jamming device & Reach significant height
Pull yourself up with the grappling hook behind the jamming device.
Destroy jamming device & Crush jamming device
Do a double jump and press and hold 
/ 
/ CTRL to do a slam onto the jamming device.
Kill rippers
Then kill all enemies in the area.
Reach lower level
Get onto the elevator and interact with it to take a ride down.
Kill rippers
Once you get down, kill all enemies again.
Find prisoners
Now follow the path to reach the prisoners.
Find Quent
Jump down the hole near the prisoners to find Quent.
Kill rippers
Now kill all enemies around the machine.
Kill Driller Hole
After killing the enemies, the boss of the refinery will appear. Kill him.
Save Quent or Lose Quent (+ Destroy ripping machine if you lose Quent)
A 50-second timer will start, and to save Quent, look above you and you will find five leaver around the machine to pull out with the grappling hook.
You also need to destroy 4 pipes above you within the time limit. If you fail to do this Quent will die, but you will need to destroy the machine anyway.
This finishes Unpaid Tab in Borderlands 4.
NEXT: Her Flaming Vision
For all other Quests refer to our complete Borderlands 4 Walkthrough.
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