The world of Kairos in Borderlands 4 is packed with chaos, humor, and countless distractions from the main story. Beyond your hunt for Vaults and Eridium, the game offers 98 side missions that expand the lore, unlock valuable loot, and reward creative problem-solving. Whether you’re chasing rare cosmetics, powerful weapons, or hidden achievements, this guide lists every side mission by region – including where to find them and how they connect to the main campaign.
Before diving into the list, it’s worth knowing why they’re essential. Completing side missions:
- Grants large amounts of XP, Cash, and Eridium
- Unlocks exclusive Vault Hunter Heads, ECHO-4 Paintjobs, and Weapon Skins
- Counts toward the Grassroots Campaigner trophy / achievement (complete all 98)
- Provides some of the funniest and most bizarre storylines in the game
Missions are marked on your map by blue exclamation points (!). Hidden ones require exploration or story progress to reveal.
The Fadefields – Where Kairos Begins
The opening region is home to several early-game quests that teach the rhythm of exploration and reward loops.
Coastal Bonescape
- Meat is Murder – Speak with Byron at Harper’s Hideaway
- Abduction Injunction – Talk to Wildhorn Jenny south of Plungeford
- Hangover Helper – Found near Jenny’s camp; helps Iris recover from a night out
- Brew-Ha-Ha – Unlocks after Ain’t No Sham in It is completed
- No Place Like Home – Claptrap returns with a building plan gone wrong
The Howl and Nearby Areas
- Ready to Blow – Retrieve an echo device from The Launchpad
- Breeding Daisies (→ unlocks Whack-A-Thresher)
- Whack-A-Thresher (complete Mort’s mini-farm storyline)
- Carried Away – Triggered via outhouse interaction
- Droning On / Drone Ranger – Drone-centric missions across The Howl and Idolator’s Noose
- The Kairos Job – Shim’s series introducing the Scoundrel Roundup
- Scoundrel Roundup: Glitch
- Scoundrel Roundup: Kilo
- Free for the TASKing → TASK and Ye Shall Receive → TASK Master
- Working for Tips – Triggered by Echo Log after main mission A Lot to Process
- Null and Void → All Charged Up → Bound for Launch – Late-game tech questline
- PowerDrop – Unlocked after Rush the Gate main mission
- Savage Salvage – Investigate wreckage west of Shut-Eye Keep
Idolator’s Noose / Hungering Plain / Dissected Plateau
- Electroshock Therapy → The Second Session – Professor Ambreleigh’s mad science arc
- Finway’s Cup – Arena mini-tournament
- Gone Are My Leggies → To the Limb It → Redux → Couples Therapy – One of the funniest multi-part chains
- Primordial Vault: Fadefields – Vault challenge requiring key fragments
Carcadia Burn – Urban Madness and Media Wars
Carcadia Burn’s dense cityscapes are full of eccentric characters and twisted media personalities.
Lopside & Grindstone of the Worthy
- Potty Mouth – Found at Embracer’s Bluff; a talking toilet with too much to say
- Imminent Jest – Jankus’s chaotic stage play at Wallowing Heights
- The Power Ballad of Rodd Vomit – A musical journey with Lisa Fullfolja
- Vicious News Cycle: Cannon Fodder / Hot Tag / Mime Time Live – The infamous media-manipulation trilogy
- Primordial Vault: Carcadia Burn – Vault raid offering sniper-type rewards
Ruined Sumplands & Tonnage Peel
- Fault Hunting – Seismic chaos with Leopold at the Society for Amateur Seismology
- Vend of the Line – Penelope Streams’ aftermath mission post-siege
- Enter the Electi Part 1 & Part 2 – Lead into Carcadia’s political turmoil
- The Council Divided → A Traitor Within → The Mole’s Gambit – Three-part rebellion arc
- PB & J – Casual beach mission with PJ
- Her Own Funeral – Triggered after Her Flaming Vision main mission; investigate a missing citizen
- Broken Ships – Meet Zane at Moxxi’s Bottoms Up! bar
- And Welcome to the Jam – Sports-themed parody in Tonnage Peel
- Ripples and Rituals – Ritual-cleansing quest following Her Flaming Vision
Terminus Range – Frozen Peaks and Philosophical Vaults
Cold mountains, mysterious monks, and philosophical Vault Hunters fill this zone.
Cuspid Climb & Stoneblood Forest
- Flat Kairoser – Skeptical Sam’s reality check on conspiracies
- Peak Performance – Claptrap’s disastrous training program
- Wayward Gun / Way Too Chill – Gun personality duology
- Forgive Me – Hidden cave mission dropped by a Psycho beneath the waterfall skull
- Father of the Glide / Crack This Guy’s Back / Sage Against the Machine / The Next Quest Thing – Philosophical line in Stoneblood Forest
The Low Leys & Belton’s Bore
- Mob Mentality → Mob Rules → Angry Mob → Mob Justice – Faction-based saga in The Pit
- La-La-Last Call / Ain’t No Sham in It / Brew-Ha-Ha – Ole Shammy’s comedy trilogy
- The Importance of Being Furnished / A Brother in Need / It’s a Whole Phase Situation / Returned to the Mountain / A Call for Help – Community-oriented side stories
- Tandem Access Memory – Data retrieval after Angry Mob
- Never Meet Your Heroes – Meta-commentary quest involving a self-absorbed hunter
- Primordial Vault: Terminus Range – High-tier Vault encounter
Dominion – Endgame Quests and Urban Legends
Dominion’s city sectors represent the climax of side-story arcs and post-game clean-up.
Carcadia District
- Price of Freedom → Part 2 → Part 3 – Liberation chain with Joe and Vito
- Joe & Sue – Emotional aftermath of Price of Freedom
- The Black Market / Overwriting a Wrong / Bad Seed → Part 2 / The Cat’s Pajamas – Corporate corruption and smuggling storyline
Terminus District
- AAA for Effort / Below the Surface / No-Escape Room / Love in the Time of Eridium Poisoning – Puzzle, combat, and toxic-romance quests
- The Neverending Quarry → A Quarry of Epic Proportions → The Final Quarrel – Explosive chain completing the Ripper subplot
Fades District
- Old Raymond → Old Lads → Old Tricks – Trilogy unlocking new Dominion areas
- One Gassy Issue → One Slimy Issue – Environmental hazard clean-ups with Beth
Hidden Side Missions You Might Miss
A few quests never appear on the map and can halt your Grassroots Campaigner progress.
Keep an eye out for:
- Breeding Daisies – Help Mort under attack in The Howl
- Forgive Me – Inside the waterfall cave in Cuspid Climb
- The Neverending Quarry → A Quarry of Epic Proportions → The Final Quarrel – Dominion’s unmarked trap series
- Brew-Ha-Ha – Requires completing Ain’t No Sham in It
- Her Own Funeral – Only appears after finishing Her Flaming Vision
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Quick Tips for Borderlands 4 Side Mission
- Unfog each map early to see new blue “!” markers.
- Track multi-part questlines (such as Mob or Electi) – some missions unlock others in different zones.
- Finish side missions during the story – they scale XP rewards efficiently.
- Contracts from boards don’t count toward the 98 total.
- You can review progress via Missions → Replay → Filter by Location or Name.
With 98 unique side missions spanning comedy, tragedy, and explosive absurdity, Borderlands 4 turns every region into a living playground. Finishing them not only nets the Grassroots Campaigner trophy but also reveals the depth of Kairos beyond its main story. Whether you’re fighting Threshers for Mort or exposing corporate corruption in Dominion, these quests prove why Borderlands 4 remains the series’ most content-packed entry yet. Play Now!
