Borderlands 4 (BL4): Side Mission Locations & Interactive Tracking Guide

Side Missions are the optional quest layer of Borderlands 4 — 96 missions spread across all four regions of Kairos, touching every faction, storyline, and character introduced in the campaign.


Completing all 96 unlocks the Grassroots Campaigner trophy and achievement. Every Side Mission's starting location is tracked at exact coordinates on the Borderlands 4 interactive map, with prerequisites and chain requirements cross-linked per entry.


Note: Contract Board miniquests do not count toward the Grassroots Campaigner total. Only the named Side Missions given by NPCs and triggered by object interactions count.


The 98 vs 96 Counter Explained


The in-game challenge tracker under Missions → Challenges → World → Grassroots Campaigner displays 98 as the total required.


There are, however, only 96 unique Side Missions — some missions count as two entries on the challenge tracker due to a known bug. Completing all 96 missions in the guide brings the challenge tracker to 98/98 and unlocks the trophy.


If the tracker stops at 97/98 after completing every listed mission, the most likely cause is one of the hidden missions remaining incomplete.


Three Types of Side Missions


  • Standard Missions — the majority of Side Missions, marked with a blue "!" icon on the map and compass when the quest giver's area is explored. These reveal automatically as the map is unfogged.


  • Chain Missions — missions that only appear after completing a specific prerequisite quest. Some chains require two prerequisites from different areas simultaneously — Ain't No Sham in It requires both La-La-Last Call (The Low Leys) and Hangover Helper (Coastal Bonescape) to be complete before it unlocks. The Price of Freedom chain in Carcadia District runs four missions deep. Every prerequisite is cross-linked in each guide entry.


  • Hidden Missions — missions with no map marker that only activate when specific unmarked objects are interacted with or specific environmental conditions are met. Players stuck at 93/98 or 97/98 are almost always missing one or more of these.


All Hidden Side Missions in Borderlands 4


Five to seven Side Missions have no map marker and require specific triggers:


  • Breeding Daisies (The Howl) — defeat Threshers attacking Mort west of The Launchpad, then talk to him. Mort only appears after the Threshers are defeated.


  • Whack-A-Thresher (The Howl) — only appears in the quest log after completing Breeding Daisies; chain mission, not on the map independently.


  • Forgive Me (Cuspid Climb) — defeat the Badass enemy in a cave in the northeastern Cuspid Climb area and collect the blue quest item it drops.


  • The Neverending Quarry (Terminus District) — interact with a Red Chest near Frantic Scrawl Fast Travel. The chest appears ordinary until touched, at which point it triggers the quest.


  • A Quarry of Epic Proportions (Terminus District) — after completing The Neverending Quarry, find and interact with a lone Ammo Vending Machine in the northern tunnels. It explodes as a trap, triggering the mission.


  • The Final Quarrel (Terminus District) — after completing A Quarry of Epic Proportions, find a dumpster near The Food Court Safehouse. Opening it triggers another explosive trap and starts the final Quarry chain mission.


Mission Types by Faction


Side Missions also contribute to four faction-specific sub-challenges, each with its own trophy:


  • Pale Blueberry Dot — all Outbounder missions (Fadefields faction)
  • Mole Money, Mole Problems — all Electi missions (Carcadia Burn faction)
  • Who's the Boss? — all Auger missions (Terminus Range faction)
  • Widely Beloved Mascot — all Claptrap missions (spanning all regions)


Primordial Vault Missions Count


The three Primordial Vault missions — one per region, each requiring 3 Vault Fragments — are tracked as Side Missions and count toward the Grassroots Campaigner total.


These are among the most rewarding missions in the game, ending in a Boss fight against a Primordial Guardian for region-exclusive legendary loot.


All Side Mission Locations in Borderlands 4


The densest mission clusters are in The Howl (Fadefields — the largest single-area count, including multiple TASK chain missions and Savage Salvage), Ruined Sumplands (Carcadia Burn — Vend of the Line and all Vicious News Cycle missions), The Low Leys (Terminus Range — the largest cluster including La-La-Last Call, Ain't No Sham in It, and the Exit Through the Rift Shop chain), and Carcadia District (Dominion City — the full Price of Freedom chain plus Joe & Sue, The Black Market, and Overwriting a Wrong).


All 96 missions with prerequisites, chain order, and map coordinates are in the interactive guide below.

Name Details
Primordial Vault: Carcadia BurnVault of Radix

Prerequisite: Obtain the 3 Vault Fragments in the Carcadia Burn region.


Quest Giver: Marked Triangular Object in the Vault of Radix starting area


Objectives:

  • Move toward your end; it might sting a little.
  • Kill all Enemies.
  • Reach the place where no soul survives.
  • Progress onward... the end lies ahead.
  • Cross the threshold to certain death.
  • Defeat Primordial Guardian Radix.
  • Enter rift... could be a trap.
  • Claim your just rewards.
  • Enter rift to exit.


Rewards:

  • Money
  • XP
  • Eridium
  • Sniper Rifle
Primordial Vault: FadefieldsVault of Inceptus

Prerequisite: Obtain the 3 Vault Fragments in The Fadefields region.

Quest Giver: Marked Triangular Object in the Vault of Inceptus starting area


Objectives:

  • Go to your death.
  • Kill All Enemies.
  • Progress through your certain annihilation.
  • Go toward oblivion.
  • Go to point of no return.
  • Defeat Primordial Guardian Inceptus.
  • Enter rift... if you dare.
  • Claim your just rewards.
  • Enter rift to exit.


Rewards:

  • SMG
  • Money
  • XP
  • Eridium
It's a Whole Phase SituationThe Low Leys

Prerequisite: Complete Dark Subject.

Quest Giver: Watching Gee


Objectives:

  • Find Mori/Reach Mori’s last known location.
  • Find Mori/Kill creeps.
  • Find Mori/Pick up votive.
  • Find Mori/Reach shrine.
  • Capture safehouse.
  • Find Mori/Place votive.
  • Reach Light.
  • Destroy the barrier.
  • Enter the cave.
  • Find Mori.
  • Talk to Mori.
  • Help Mori escape/Make bridge for Mori.
  • Help Mori escape/Follow Mori.
  • Help Mori escape/Talk to Mori.
  • Help Mori escape/Enter rifts.
  • Help Mori escape.
  • Help Mori escape/Clear out the Rippers.
  • Find Mori again/Help Mori escape.
  • Reach heart of cave/Help Mori escape.
  • Help Mori escape/Kill rippers.
  • Help Mori escape/Help Mori get out.
  • Help Mori escape/Kill rippers with Mori.
  • Help Mori escape/Follow Mori.
  • Escape through rift.
  • Return to Watching Gee.


Rewards:

  • Money
  • XP
  • Eridium
  • Submachine Gun (blue or purple rarity)
  • Vault Hunter Style (Earned Stripes)
Primordial Vault: Terminus RangeVault of Origo

Prerequisite: Obtain the 3 Vault Fragments in the Terminus Range region.


Quest Giver: Marked Triangular Object in the Vault of Origo starting area


Objectives:

  • Embrace the dying of the light.
  • Kill all enemies.
  • Do not turn back in fear of your inevitable end.
  • Walk to oblivion with eyes wide open.
  • Keep going... the end is near.
  • Defeat Primordial Guardian Origo.


Rewards:

  • Money
  • XP
  • Eridium
  • Shotgun
The War On Mercenary DayCarcadia District
Forgive MeCuspid Climb

Prerequisite: Defeat the Badass enemy in the cave and collect the blue quest item.

Quest Giver: Badass enemy drop


Objectives:

  1. Find Zanzibart’s final resting place.
  2. Lay Zanzibart’s bolt to rest.
  3. Slay Myrmidon of the Cruel Dawn.
  4. Hearken to Vycarias’s tale.


Rewards:

  • Money
  • XP
  • Eridium
Abduction InjuctionCoastal Bonescape

Prerequisite: Complete Recruitment Drive.

Quest Giver: Wildhorn Jenny


Objectives:

  • Check Herd.
  • Follow Order ship.
  • Free abducted beasts.
  • Kill Order captors.
  • Talk to beast.


Rewards:

  • Money
  • XP
Meat is MurderCoastal Bonescape

Prerequisite: Complete Recruitment Drive.

Quest Giver: Byron


Objectives:

  • Follow Byron.
  • Search barn.
  • Find Harper.
  • Activate kill switch.
  • Destroy coolant regulators.
  • Release harper.
  • Examine Harper’s body.
  • Examine radio.
  • Kill rippers.
  • Reach tool shop.
  • Talk to shop owner.
  • Find cave beyond waterfall.
  • Reach cave.
  • Kill murderer.
  • Listen to radio.


Rewards:

  • Money
  • XP
  • Pistol
  • Vault Hunter Style (Tropic of Cairn)
  • Eridium
Brew-ha-haCoastal Bonescape

Prerequisite: Complete Ain’t No Sham in It.

Quest Giver: Ole Shammy


Objectives:

  • Reach geyser.
  • Unclog geyser.
  • Throw in colored nuggets.
  • Pick up primo shine.
  • Return to Ole Shammy.


Rewards:

  • Money
  • XP
  • Eridium
Hangover HelperCoastal Bonescape

Prerequisite: Complete Recruitment Drive.

Quest Giver: Iris


Objectives:

  • Talk to Ole Shammy.
  • Travel to cliffs.
  • Gather fruit + Kill kratch (Optional) + Kill Badass kratch (Optional).
  • Return to Ole Shammy.
  • Place fruit in stomping tub.
  • Remove seeds from fruit.
  • Find geyser.
  • Grab red geyser nugget.
  • Place red geyser nugget in fruit.
  • Gather mangler scent glands.
  • Return to Ole Shammy.
  • Place scent glands in fruit.
  • De-spike beer supply.
  • Gather partygoers.
  • Shoot keg’s spout.
  • Kill rippers.


Rewards:

  • Money
  • XP
  • Pistol (Green or Purple Rarity)
  • Vehicle Paint Job (Soused)
  • Weapon Skin (Soused)
Breeding DaisiesThe Howl

Prerequisite: Complete Down and Outbound.

Quest Giver: Mort


Objectives:

  • Save Mort from the Threshers.
  • Reach thresher nest.
  • Collect thresher eggs 0/3.
  • Return to Mort.
  • Give eggs to Mort.
  • Collect mangler meat.
  • Return to farm.
  • Place thresher food.
  • Subdue Daisy.
  • Perform a thresher mating call.
  • Kill wildhorns.
  • Perform mating call, but mean it this time.
  • Kill kratch.
  • Perform a mating call that unleashes your inner thresher.
  • Subdue thresher.
  • Set mood.


Rewards:

  • Money
  • XP
  • Eridium
  • Shotgun (Green to Purple Rarity)
  • Vault Hunter Head (It’s Threshy!)
Savage SalvageThe Howl

Prerequisite: Unlocks during Down and Outbound.

Quest Giver: Echo


Objectives:

  • Reach wreck.
  • Find stronger signal.
  • Tune into signal.
  • Enter ripper tunnels.
  • Find crash survivor.
  • Kill Ripper guards.
  • Free crash survivor.
  • Follow Derek to ripper drill.
  • Kill rippers in Derek’s way.
  • Follow Derek to ripper drill.
  • Kill more rippers in Derek’s way.
  • Follow Derek to ripper drill.
  • Kill rest of rippers in Derek’s way.
  • Follow Derek to ripper drill.
  • Refuel ripper drill.
  • Defend drill refueling.
  • Release drill.
  • Follow Derek.
  • Pull Derek up.
  • Kill attacking rippers.
  • Wait for Derek.
  • Kill cargo thresher.


Rewards:

  • Money
  • XP
  • Shotgun (Green to Purple)
  • Eridium
Carried AwayThe Howl

Prerequisite: Unlocks during A Lot to Process.

Quest Giver: Naver (Porta Potty)


Objectives:

  • Hit porta potty lock
  • Take surveyor to its target.


Rewards:

  • Money
  • XP
Whack-A-ThresherThe Howl

Prerequisite: Complete Breeding Daisies.

Quest Giver: Mort


Objectives:

  • Slam some threshers.


Rewards:

  • Money
  • XP
  • Eridium
Working for TipsThe Howl

Prerequisite: Unlocks during One Fell Swoop.

Quest Giver: ECHO Log


Objectives:

  • Take ECHO log.
  • Collect food rations.
  • Deliver food rations.


Rewards:

  • Money
  • XP
PowerDropThe Howl

Prerequisite: Complete Rush the Gate.

Quest Giver: Monty


Objectives:

  • Purchase a power core.
  • Throw in power core.
  • Claim your prize.


Rewards:

  • Money
  • XP
  • Eridium
The Kairos JobThe Howl

Prerequisite: Complete One Fell Swoop.

Quest Giver: Shim


Objectives:

  • Take walk with Shim.
  • Recruit Kilo.
  • Recruit Glitch.
  • Return to Shim.
  • Go over plan.
  • Rendezvous with crew.
  • Take electro charges from Glitch.
  • Get on warehouse roof.
  • Kill order warehouse guards.
  • Place electro charges on arrays.
  • Find door controls.
  • Kill Order security guards.
  • Meet with the crew.
  • Shoot bomb.
  • Infiltrate warehouse.
  • Wait for crew.
  • Turn off power relays / Kill Order security guards.
  • Find the right spot.
  • Kill fire suppression forces.
  • Kill Order security forces.
  • Pick up drone rockets.
  • Attach drone rockets to safe.
  • Tell Glitch to launch safe.
  • Travel to safe’s new location.
  • Kill Order security forces.
  • Open safe.


Rewards:

  • Money
  • XP
  • Eridium
  • Cosmetic: Weapon Skin (Smiley)
  • SMG
Free for the TASKingThe Howl

Prerequisite: Complete The Kairos Job.

Quest Giver: Kilo


Objectives:

  • Find Order pod.
  • Smack button.


Rewards:

  • Money
  • XP
  • Eridium
  • Weapons Cache
TASK MasterThe Howl

Prerequisite: Complete TASK and Ye Shall Receive.

Quest Giver: Kilo


Objectives:

  • Find Order pod.
  • Smack button.


Rewards:

  • Money
  • XP
  • Eridium
TASK and Ye Shall ReceiveThe Howl

Prerequisite: Complete Free for the TASKing.

Quest Giver: Kilo


Objectives:

  • Find Order pod.
  • Punch button to start.


Rewards:

  • Money
  • XP
  • Eridium
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