All Hidden Side Mission Locations in Borderlands 4

There are 98 Side Missions in Borderlands 4, and while most of them appear on the map just by exploring Kairos and ticking off the ‘?’ that you find on the map, others will be completely absent. If you head into your Challenges and head to World, you’ll see that your Grassroots Campaigner challenge to complete all side missions is sitting at around 93 or more out of 98. If you’re struggling to find missing Side Missions that don’t appear on the map, then we have you covered. Below, you’ll be able to find every hidden Side Mission in Borderlands 4 and the secret unlock requirements needed to progress them.

Breeding Daisies

Head west from the Outbounders HQ of The Launchpad in The Howl of the Fadefields, and you’ll find a man on a rock being bullied by Threshers in Gushing Turret. After you kill the Threshers, you can interact with the man, named Mort, who will give you the Side Mission: Breeding Daisies. This Side Mission involves the Vault Hunter entering a cave to kill Threshers to collect their eggs, so that Mort can then raise them as his own baby turned farmhand.

Whack-a-Thresher

Just south of The Kit Hole Order Silo (which is found west of The Launchpad), is Mort’s farmstead. After completing Breeding Daisies, players can head here to interact with Mort for an additional Side Mission: Whack-a-Thresher. This Side Mission is pretty simple, and it just involves punching and stomping on disobedient Threshers to make them get back to work.

Forgive Me

How to Find Zanzibart's Final Resting Place in Borderlands 4

Head south of The Reliquary Order Silo in the Cuspid Climb region of Terminus Range, where you will find a cave opening along with a waterfall and a giant creature’s skull. Grapple into the cave by following the path on the right, and at the south side of the cave, you will find a Badass Psycho that emerges from the crevice. Once killed, this Badass Psycho drops the Desecrated Bolt, which begins the Side Mission: Forgive Me

Now, players need to find Zanzibart’s final resting place, but there is no marked location on the map. To find Zanzibart’s final resting place, head to the north region of Stoneblood Forest (north of the Snowy Wells safehouse) and glide into the cave opening, where you can place the Desecrated Bolt on a shrine and then fight the Cursed Myrmidon of the Cruel Dawn. After which, you’ll have to listen to an NPC called Vycarias, the Lore-Singer, ramble on for around 10 minutes, and then the quest is completed.

The Neverending Quarry

Enter the Terminus District of Dominion, where you will want to navigate your way to the Ironwall Resolve Order Bunker. However, just before heading up the main stairs to the Bunker itself, take a detour and head right, where you will find a separate room with a red chest in the center. As soon as you open the chest, back away, as it will explode. This will then begin the Side Mission: The Neverending Quarry. This one is extremely simple to complete, as once the dialogue has finished, a group of Rippers will appear, and all you need to do now is kill them. However, it is essential to complete The Neverending Quarry to spawn the requirement for the second Side Mission in this chain.

A Quarry of Epic Proportions

Still in the Terminus District, use the Fast Travel Station at Frantic Scrawl and head through the tunnel system that takes you north, where you will find a lone Vending Machine. This Vending Machine is a trap, and once players interact with it, they will need to back away for it explodes. Interacting with the Vending Machine starts the Side Mission: A Quarry of Epic Proportions. Upon doing so, players will again need to defeat the ambush of Rippers, and there are a few more this time, but it’s nothing a strong Vault Hunter can’t handle. Upon their demise, the quest will be completed, and there’s only one more to do.

The Final Quarrel

Remaining in the Terminus District, head to the southwest area to The Food Court Safehouse, where, simply by following north to a dead end from within the Safehouse, you will find a lone dumpster. Once you open the dumpster, it will explode, like the previous items you’ve interacted with. This begins the Side Mission: The Final Quarrel. Horatio and his Rippers will emerge, so once you kill them, the Side Mission will be completed, and with Horatio dead, there are no more pesky traps that he’s laid for you to worry about.

Brew-Ha-Ha

To obtain the Brew-Ha-Ha Side Mission, you must have completed Hangover Helper from Ole Shammy, and then you must have completed Mob Justice with The Boss in Terminus Range. After, you’ll open up further Side Missions in The Pit, and a new Side Mission from Ole Shammy. Simply return to Shammy’s Shack at the Coastal Bonescape in The Fadefields to check if this is the Side Mission you’re missing.