Borderlands 4: Fandomination Full Quest Walkthrough

Fandomination is a DLC side mission on Kairos that hands you one job: break up a fan club that has gotten a little too attached to FL4K. It starts in The Upper Crust, runs through three enemy-held areas for parts, and ends with a staged hologram performance and a controlled demolition.

Quick answer: Accept Fandomination from FL4K in The Upper Crust, talk to the FL4K Fanatic, FL4K Worshiper, and FL4K Devotee, then collect three explosives, one detonator, and three projectors, place all seven items at FL4K’s shrine, shoot the rocket fuse to start the show, and shoot the detonator to destroy the shrine.

Fandomination mission details and required items

The mission is given by FL4K and stays inside a small cluster of locations, so there is no long cross-region travel. Everything you need to gather is held by enemies, which means the run is mostly combat with short objective markers in between.

Detail	Value
Mission type	DLC side mission
Given by	FL4K
Starting region	The Upper Crust, Kairos
Other areas visited	Vinechoked Canopy, Pyroclast Field, Tediore Supply Outpost Primaris, Tediore Lockdown: Lapillus Bend
NPCs to question	FL4K Fanatic, FL4K Worshiper, FL4K Devotee
Items to collect	3 explosives, 1 detonator, 3 projectors
Rewards	Aerodyne vehicle paintjob, Plasma Sessiquadrate Vertex sniper rifle

Start the mission and question the three suspicious Electi

The opening stretch is pure conversation. You only need to reach each marked fan and talk to them, and the third one is the trigger that turns the mission into a demolition job.

Open the map, set The Upper Crust as your destination, and travel to FL4K’s position. The route from the Vinechoked Canopy into The Upper Crust is direct, so follow the waypoint rather than clearing the area.

Speak with FL4K and accept the mission. The first objective asks you to investigate suspicious Electi, and three separate markers appear on your HUD.

Aiming at Electi machinery in The Upper Crust with the investigate objective active on the HUD — The investigate objective tracked in The Upper Crust after taking the mission from FL4K. Image: Gearbox Software

Drop down toward the Pyroclast Field and talk to the FL4K Fanatic. Sliding down the lava river is the fastest way in, and the marker sits just past the landing point.

Pyroclast Field with NPCs ahead and the quest tracker showing the geyser objective — Arriving on the Pyroclast Field where the first fan is waiting. Image: Gearbox Software

Cross the rocky ground to the second marker and speak with the FL4K Worshiper, then continue to the FL4K Devotee. The Devotee spills the plan for a fan shrine, and FL4K immediately orders you to tear it down.

Collect the explosives, detonator, and three projectors

This is the longest part of the mission and the only part with real resistance. Seven items are needed in total, and each one is guarded.

Fast-travel to the marked Ripper camp and fight through it to pick up three explosives. The charges are spread around the camp, so clear the defenders before you start collecting.

Head to Tediore Supply Outpost Primaris and kill the Badass enemy holding the detonator. It drops on death and is picked up like any other mission item.

Searching wreckage at Tediore Supply Outpost Primaris with the detonator objective tracked — Tracking down the detonator at Tediore Supply Outpost Primaris. Image: Gearbox Software

Follow the disturbance marker into the cave and free the trapped NPC. The projector rig here does not come down by hand, so look above the cage for the yellow power joint and shoot it to drop the first projector.

Travel to the remaining Tediore positions, including Tediore Lockdown: Lapillus Bend, and grab the second and third projectors. With all three secured the shrine marker becomes your next objective.

Note: If a projector will not register, the rig holding it is still powered. Break the yellow joint above it first, then collect the projector from the ground.

Rig FL4K’s shrine and run the hologram show

The finale is a setup sequence followed by two shots. Every item has its own placement point around the shrine, and the mission will not advance until all seven are down.

Travel to FL4K’s shrine and walk the perimeter, placing the three explosives and the detonator at their marked spots. Each placement clears its marker from the HUD.

Heading toward FL4K's shrine with the reach shrine objective shown on screen — The approach to FL4K’s shrine once all seven items are in hand. Image: Gearbox Software

Set the three projectors at their positions around the structure. These are what generate the giant FL4K hologram, so none of them can be skipped.

Shoot the rocket fuse to summon the crowd and switch the hologram on. The oversized FL4K insults the fans, which backfires completely because they treat it as a personal appearance rather than a threat.

Shoot the detonator. The shrine goes up, the fan club scatters, and the mission completes on the spot with a completion prompt and the mission clearing from your tracker.

Fandomination rewards: Aerodyne paintjob and Plasma Sessiquadrate Vertex

Both rewards land in the Rewards panel of your inventory rather than dropping on the ground. Open the inventory, move to the Equipment tab, and open the reward chests to take them.

Inventory Equipment tab open with the Rewards panel showing a grid of reward chests — The Rewards panel where the mission payouts are claimed. Image: Gearbox Software

The Aerodyne is a vehicle paintjob and applies through vehicle customization. The Plasma Sessiquadrate Vertex is the gun reward, and its numbers scale with the level you complete the mission at.

Plasma Sessiquadrate Vertex stat	Value at level 57
Item Score	6,167
Damage	4,110 x2
Accuracy	97%
Fire rate	2.0/s
Reload time	1.8s
Magazine size	12

The whole run takes well under half an hour if you go straight for the marked camps, and the only genuine stumbling block is that cave projector. Break the power joint, collect all seven parts, and the shrine takes care of itself.