☆ How Rush Saved Mercenary Day (Bounty Pack 1)
★ 12 active SHiFT Codes as of December 4, 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe

Boss farming in Borderlands 4 is done through Moxxi’s Big Encore stations, which let you respawn and fight defeated bosses through Cash. Learn how to farm bosses, the best bosses to farm, how costs scale, and which bosses can be replayed here.
List of Contents

Once players have beaten a boss in Borderlands 4, they can head back to that boss’s arena to find Moxxi’s Big Encore station. This makes every cleared arena a permanent farming location letting you revisit the arena.
Tip: Loot scales with your level. You can farm the first boss grab stronger gear and boost your early game progression.

You can find Splashzone’s arena in the bottom right corner of the map, making it a consistent and easy farming spot.
Splashzone is relatively easy compared to later bosses, making it a fast and reliable way to grind for early game legendary weapons, shields, and mods.

Interacting with the station costs Cash. It instantly respawns the boss and let players replay the boss fight. This system replaces the old method of quitting to the main menu and reloading, allowing for smooth farming.
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The Cash cost of using Moxxi’s Big Encore increases as your Vault Hunter levels up, so farming bosses gets more expensive the further you progress. The price appears to be 600 times your current level.

After completing the campaign for the first time, Big Encores will become available. These give more drops compared to normal Encores, making it easier to grind for Legendary weapons. Note that these cost Eridium instead of cash and is only available for the weekly boss.
| Boss Name | Description |
|---|---|
| Splashzone | Easiest and Fastest Boss to Farm |
| Primordial Guardian Inceptus | Best Boss to Farm for Legendary Class Mods |

Due to how early this boss can be encountered, his moveset only consists of a few melee attacks and his health pool is very low. Additionally, Moxxi's Big Encore Machine is so near the boss arena that you can reach it by just jumping and gliding, making farming incredibly fast.
Splashzone can be found in the Coastal Bonescape in Fadefields.
You can farm Splashzone extremely fast if you have a friend to play with! Either you or your friend will kill Splashzone while the other one waits at Moxxi's Big Encore Machine to ressurect him immediately.
The combined near distance of Moxxi's Big Encore Machine and Splashzone's low health makes farming extremely fast!

While all three guardians drop legendary class mods, we recommend farming Inceptus. Origo and Radix both have ranged AOE attacks that can make approaching them tough while Inceptus has a mechanic that makes him attack less when you break his blue shield.
Additionally, Inceptus can be found in the Dissected Plateau in Fadefields. This makes fast travelling from Splashzone to Inceptus more convenient as you avoid the warning of entering a new region if you are playing with a squad.
Primordial Guardian Inceptus Drops and Location

If you wish to farm other bosses to obtain a legendary class mod, you can try farming story bosses. Out of all the story bosses, we recommend farming the Ripper Queen due to having little to no gimmicks in her boss fight.
Moxxi's Big Encore allows you to rematch any boss that you've defeated in main missions and side missions.

Every week, one boss is chosen as the Weekly Big Encore Boss. They will be a tougher version of the standard boss fight with added modifiers, making them more difficult but highly rewarding battles. To access these, you must complete the Ultimate Vault Hunter Mission: Big Encore mission given after completing the campaign.
What is Ultimate Vault Hunter?
To rematch bosses, you'll need to pay Cash to respawn the boss. However, this can easily be offset by selling unwanted drops as junk. After beating the game, you'll have access to the Weekly Big Encore version, which will require Eridium instead.
Generally, farming the weekly boss is not worth it due to the cost of Eridium. While 100 Eridium doesn't seem like a big number, farming a weekly boss over and over will cost you a lot.
Considering that Eridium is not as abundant as cash, farming normal bosses is much better since you gain more cash by selling unwanted gear. Additionally, normal bosses are a lot easier to kill and will net you more loot in the long run.

Beginner's Guide to Borderlands 4: Tips and Tricks
How to Farm Bosses



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