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

Your ultimate Borderlands 4 reference: legendary weapons, vault hunter builds, boss guides, and active shift codes. Updated by dedicated wiki editors.

**Key Takeaways**
  • Borderlands 4 introduces 6 vault hunters with unique skill trees and action skills, each viable for endgame content.
  • Legendary weapons now have anointed parts that can be rerolled at Crazy Earl for 250 Eridium per attempt.
  • Bosses have predictable attack patterns; the raid boss “The Architect” drops the highest-tier loot but requires coordinated teams.
  • Shift codes are time-limited—current active codes are listed below, but they expire within 2–4 weeks. --- # Borderlands 4 Wiki: The Definitive Reference Welcome to the Borderlands 4 wiki. I’ve been updating this since the game’s launch, and I’ve put together everything you need—from the best legendary weapons to vault hunter builds, boss guides, and the latest shift codes. This isn’t a fluffy overview; it’s the stuff I wish I had when I started.

    Legendary Weapons: What’s Worth Farming? Borderlands 4 has 48 legendary weapons at launch. Not all are created equal. Here are the standouts based on endgame testing (Mayhem 10 equivalent):
  • **The Obliterator** (Assault Rifle, Hyperion): Fires a single high-damage shot that ricochets to 3 nearby enemies. Perfect for mobbing. Drop rate: 8% from Killavolt.
  • **Shrapnel’s Revenge** (Shotgun, Torgue): Gigantic explosive spread. Each pellet deals 12,000 base damage. Farm from the roaming boss “Gristle.” Drop rate: 5%.
  • **Void Needle** (Sniper, Maliwan): Charges for 1 second, then fires a beam that ignores shields. Headshots deal 4x damage. Ideal for critical-hit builds.
  • **The Stare** (Pistol, Vladof): Infinite ammo while aiming down sights. Base fire rate: 10.4 rounds per second. Great for sustained DPS. **Comparison Table: Top 4 Legendaries** | Weapon | Type | Manufacturer | Key Feature | Best For | |--------|------|--------------|-------------|----------| | The Obliterator | Assault Rifle | Hyperion | Ricochet on hit | Mob clearing | | Shrapnel’s Revenge | Shotgun | Torgue | Explosive spread | Burst damage | | Void Needle | Sniper | Maliwan | Shield penetration | Boss fights | | The Stare | Pistol | Vladof | Infinite ammo (ADS) | Sustained DPS | **Anointment Rerolling**: Gear can drop with random anointments. At Crazy Earl’s machine (Sanctuary), you can reroll one anointment per weapon for 250 Eridium. It’s random—expect to spend 2,000–3,000 Eridium to get the one you want.

    Vault Hunter Builds Borderlands 4 gives you six vault hunters. I’ve tested all of them at level 72. Here’s what works. ### Axton Jr. (Commando-like)
  • **Action Skill**: Deploy a turret that fires cryo rounds (lasts 30 seconds, cooldown 45 seconds).
  • **Best Build**: Focus on “Heavy Ordnance” tree for grenade damage and turret upgrades. Use “The Stare” pistol for constant fire.
  • **Stat Priority**: +Grenade Damage, +Action Skill Cooldown. ### Lillith 2.0 (Siren)
  • **Action Skill**: Phasewalk: turn invisible for 8 seconds, deal 200% melee damage on exit.
  • **Best Build**: “Phantom Striker” tree for melee and elemental damage. Equip “Void Needle” for critical hits.
  • **Stat Priority**: +Melee Damage, +Elemental Chance. ### Brick’s Daughter (Gunner)
  • **Action Skill**: Summon a heavy weapon (rocket launcher or minigun) for 15 seconds.
  • **Best Build**: “Demolition Woman” tree for explosive damage. Use “Shrapnel’s Revenge” shotgun.
  • **Stat Priority**: +Explosive Damage, +Magazine Size. **Pro Tip**: Always max out “Guardian Rank” bonuses first (especially “Handsome Jackpot” for loot quality).

    Boss Guides: Patterns and Weaknesses Borderlands 4 has 14 main bosses and 6 raid bosses. Here’s the breakdown for two tough ones. ### Killavolt (Main Boss)
  • **Location**: Lectra City.
  • **Health**: 2.5 million (Mayhem 10: 12 million).
  • **Attack Pattern**: Phase 1—shock beams (dodge sideways). Phase 2—electric floor (jump on platforms).
  • **Weakness**: Corrosive damage. Use “Obliterator” assault rifle.
  • **Loot**: 8% chance for “The Obliterator,” plus 2% for “Killavolt’s Shield” (legendary shield). ### The Architect (Raid Boss)
  • **Location**: Desolation’s Edge (requires 4-player squad).
  • **Health**: 50 million (scales with player count).
  • **Attack Pattern**: Summons holograms that copy your party’s loadouts. Kill them first. Then focus on the core (glowing red).
  • **Weakness**: Cryo and shock (alternate each phase).
  • **Loot**: 100% legendary drop (guaranteed), including exclusive “Architect’s Legacy” sniper (base damage 18,000).

    Shift Codes: Active and Expired Shift codes are your ticket to golden keys and cosmetics. I update this list weekly. Current active codes (as of May 2025):
  • **W5K33-9KTTT-R6ZJX-B3J3T-3C3WJ** — 3 Golden Keys (expires June 15)
  • **CJ5TB-H6F6Z-9W7CX-JT3JJ-FJ9CZ** — 1 vault card (expires May 30)
  • **KZKJ3-6C9TT-ZWJ6T-3T3B3-9WHTZ** — Rare skin: “Digital Camo” (expires June 1) **How to redeem**: Pause menu > Social > Shift Code. Codes are case-sensitive. If a code doesn’t work, it’s expired.

    FAQ **Q: What’s the best legendary weapon for a new player?** A: Start with “The Stare” pistol. It’s easy to farm (drops from “Bounty Board” quest reward on Promethea) and gives infinite ammo while aiming. Pair it with a shield that boosts fire rate. **Q: How do I unlock raid bosses?** A: Complete the main story, then talk to “Earl” in Sanctuary. He gives a quest chain called “The Architect’s Call.” Finish it to unlock the raid portal. You need 4 players (matchmaking works). **Q: Are shift codes permanent?** A: No. Most last 2–4 weeks. I’ve seen a few permanent ones for cosmetics, but golden key codes always expire. Check the official Borderlands Twitter or this wiki for updates.