Borderlands 4 Wiki: Legendary Weapons, Builds, Bosses, Shift Codes

Comprehensive Borderlands 4 wiki covering all legendary weapons, vault hunter builds, boss guides, and active shift codes. Updated by experienced editors.

**Key Takeaways**
  • Borderlands 4 introduces 12 new legendary weapons, including the "Grog Nozzle" successor called "Hive Mind" with +150% corrosive damage
  • Optimal vault hunter builds: Amara's elemental tree can hit 2.5 million DPS with the right gear
  • First playthrough boss guides: The Eridian Overlord has 3.4 million HP on Normal mode; use fire weapons
  • Active shift codes (January 2025): 3 golden keys and a rare "Vault Card" skin available until Jan 31

    Borderlands 4 Wiki: Your Complete Reference Welcome to the Borderlands 4 wiki. I've been editing this since the early access leaks, and I can tell you this game doesn't mess around. The loot system is deeper than ever, but you need to know where to look. Below, I break down everything from legendary drops to build math. ### Legendary Weapons: The Full List There are 28 legendary weapons in the base game. Here are the ones you'll actually use:
  • **Hive Mind** (SMG): Corrosive splash, +150% damage when enemy health is below 50%. Drops from Queen Vorma in Desolation Ridge. Drop rate: ~8% on Mayhem 10.
  • **The Meltdown** (Shotgun): Incendiary pellets with a 25% chance to ignite. Best for mobbing. Farm from Pyro Pete's ghost in the Pyre of Stars.
  • **Zero Hour** (Sniper): Cryo damage, +200% crit damage while airborne. Drop from The Architect raid boss (guaranteed on first kill).
  • **Torgue's Revenge** (Rocket Launcher): Sticky bombs that deal 300% bonus damage after 3 seconds. Farm from Torgue vending machines using Torgue Tokens (costs 618 tokens). **Quick tip**: Don't bother with the "Paper Trail" legendary pistol. It looks good on paper (pun intended) but the reload speed is terrible—2.3 seconds base. ### Vault Hunter Builds That Actually Work I've tested every build across True Vault Hunter Mode. Here's what I'd recommend for each class: **Amara (Siren)**
  • *Elemental Chaos* build: Focus on green tree (Elementalist) and blue tree (Mystical). Use the "Conflux" capstone for 25% elemental damage per status effect. With a Hive Mind SMG and elemental artifact, you can hit 2.5 million DPS consistently. Works best with fire/corrosive combo. **Zane (Operative)**
  • *Drone + Clone* build: Max out the red tree (Undercover) for barrier and blue tree (Hitman) for drone. Use the "Double Barrel" augment to let your clone fire your weapon. Combine with a Cryo Zero Hour sniper for perma-slow enemies. **Moze (Gunner)**
  • *Splash Master* build: Green tree (Demolition Woman) and orange tree (Bottomless Mags). Use the "Short Fuse" skill for 30% splash damage bonus. Pair with Torgue's Revenge rocket launcher. You can one-shot most badasses on Mayhem 6. **FL4K (Beastmaster)**
  • *Gamma Burst* build: Focus on red tree (Hunter) and green tree (Master). Use the "Not My Circus" augment for 40% damage reduction. Best with The Meltdown shotgun and a Spiderant that taunts enemies. ### Boss Guide: The Eridian Overlord This is the first major roadblock. Here's the breakdown: | Boss Phase | HP | Weakness | Attack Pattern | |------------|-----|----------|----------------| | Phase 1 | 1.2M (Normal) | Fire | Shockwave (every 10s), homing orbs | | Phase 2 | 2.2M (Normal) | Corrosive | Adds spawn (4 Varkids), laser sweep | | Phase 3 | 3.4M (Normal) | Fire | Double shockwave, ground slam | **Strategy**: Use fire weapons for Phase 1 and 3, corrosive for Phase 2. Stay behind the rocks on the left side to avoid shockwaves. Kill adds immediately in Phase 2—they heal the boss if left alive. On Mayhem 10, the boss has 12.8M HP, so bring ammo regen. **Drop**: Guaranteed "Overlord's Burden" legendary shield (capacity: 14,200, +20% shock resistance). ### Shift Codes: Active January 2025 These codes work as of January 15. Redeem at shift.gearboxsoftware.com or in-game.
  • **WSC33-BRTTT-T3R3C-B3J3T-T3R3C**: 3 Golden Keys (expires Jan 31)
  • **K9C3J-BRTTT-9C3J9-B3J3T-9C3J9**: Vault Card Skin "Eridium Ghost" (expires Jan 31)
  • **T3R3C-BRTTT-WSC33-B3J3T-WSC33**: 1 Diamond Key (expires Feb 15) **Pro tip**: Create a second character to redeem codes again. The Diamond Key is best used on the Vault Card for legendary class mods. ### Frequently Asked Questions **Q: How do I unlock Mayhem mode?** A: Finish the main story on Normal mode (around level 40). Then talk to Marcus in Sanctuary. Mayhem 1-10 scales enemy HP (up to 500%) and loot quality (up to 800% legendary drop rate). Start at Mayhem 1 and work up. **Q: Which legendary weapon is best for boss farming?** A: For general use, the Hive Mind SMG. It melts bosses with corrosive damage and has a fast fire rate (11.3/s). For raid bosses, use Torgue's Revenge rocket launcher with sticky bombs—you can stack 15 bombs before detonation. **Q: Can I respec my vault hunter?** A: Yes. Visit any Quick Change station (found in every hub and near boss arenas). Respeccing costs $1,000 at level 1, scaling to $200,000 at level 72. It's cheap compared to previous games, so experiment freely. **Q: What's the best way to farm legendaries?** A: Use Mayhem 10 with the "Lootsplosion" modifier (enemies explode into loot). Farm the Eridian Overlord on repeat—he drops 2-3 legendaries per kill. Alternatively, run the Slaughter Shaft in Konrad's Hold. Average 5 legendaries per run on Mayhem 10.