🐺 FL4K

BL4 FL4K the Beastmaster Build Guide

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Class
Beastmaster
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Action Skills
Fade Away / Rakk Attack / Gamma Burst
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Specialty
Crit Damage + Pets
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Best Weapons
Jakobs, Dahl, Atlas

The master of crits and companions honestly FL4K is the character I recommend to everyone starting out because the gameplay loop is so satisfying, Fade Away turns you invisible and guarantees every shot is a critical hit, pets revive you and tank enemies and deal surprising damage tbh, and Megavore giving every bullet a chance to crit even on non-weakspots is the kind of power fantasy that makes Borderlands so fun, I've mained FL4K since day one and every time I pop Fade Away and watch a boss health bar just disappear in seconds it never gets old, like the feeling of going invisible and then just unloading into a crit spot while your pet runs around causing chaos is something no other character quite matches and who knows maybe the pet AI will get you killed sometimes but that's part of the charm I guess

Skill Trees

Hunter

Pure crit damage, increases critical hit damage and fire rate and action skill uptime, and Megavore gives every bullet a chance to crit even on non-crit spots which is honestly the best capstone in the game for bossing. I've built FL4K so many different ways and every single time I end up coming back to Hunter as the primary tree because the damage scaling is just unmatched and you feel the difference immediately when you put points into it.

TierSkillEffectMax Points
1Interplanetary StalkerIncreased damage based on enemy type discovered5
1Leave No TraceCrit hits have chance to return ammo to magazine3
2Second IntentionKill skill: increased reload speed5
2Hunter's EyeIncreased crit damage vs each enemy type5
3Head CountCrit hits decrease action skill cooldown3
3Ambush PredatorIncreased crit damage when no enemies are targeting you5
4Two F4ngChance to fire an additional projectile5
4Big GameIncreased Hunter Skill duration and effectiveness3
5Galactic ShadowMassive crit damage boost, enemies less likely to target you1
6Megavore20% chance for any bullet to be a critical hit1

Stalker

Health regen, movement speed, and survivability, Fade Away turns invisible and guarantees all shots crit, and The Power Inside gives massive damage during Fade Away. This is the secondary tree for most crit builds and it rounds out FL4K's survivability nicely, I mean the health regen from Self-Repairing System might not look impressive on paper but when you're in a boss fight and slowly getting chipped down it makes a huge difference trust me.

TierSkillEffectMax Points
1Self-Repairing SystemFL4K and pet regenerate health5
1Sic 'EmPet gains increased damage when commanded3
2Furious AttackPet kills grant FL4K increased gun damage5
2OverclockedIncreased fire rate5
3Persistence HunterIncreased action skill duration, gun damage3
3Rage and RecoverPet gains lifesteal on attack command3
4The Fast and the FurryousFL4K and pet gain movement speed at full health3
4Hidden MachineIncreased damage when enemies target someone else5
5Pack TacticsFL4K and pet share a portion of each other's max health3
6The Power InsideFade Away gives 50% bonus damage while active1

Master

Pet-focused, your pet becomes a destructive force with damage bonuses, elemental attacks, and the ability to revive you. You get the idea, this tree makes your pet go from helpful to genuinely scary and honestly seeing your Skag just body a badass by itself is one of the most satisfying things in the game.

TierSkillEffectMax Points
1FerocityPet gains increased damage5
1Go for the Eyes!Pet's first melee after command is a guaranteed crit5
2ThroatripperChance for pet to crit - FL4K heals on pet crit5
2Who Rescued WhoFL4K damage heals pet, pet damage heals FL4K3
3Psycho Head on a StickPet gains increased damage, speed, damage reduction3
3Hive MindFL4K shares damage taken with pet1
4Mutated DefensesPet gains damage reduction and elemental resistance3
4FrenzyPet attacks stack increased damage for both5
5Barbaric YawpPet bonus stats increased 100%1
6DominancePet melee overrides can turn enemies into allies1

Pets

PetTypeAttack CommandPassive Bonus
Jabber SidekickJabberThrows radiation barrel+Movement speed
Gunslinger JabberJabberFires rocket launcher+Crit damage
Spiderant CenturionSpiderantCharges and knocks up enemies+Elemental damage
Scorcher SpiderantSpiderantBreathes incendiary cone+Incendiary damage
Guard SkagSkagCharges with knockback+Gun damage
Eridian SkagSkagFires singularity pulling enemies+Fire rate

Best FL4K Builds

Fade Away Guerrillas in the Mist - Crit Build

The most popular FL4K build, guaranteed crits during Fade Away combined with Megavore means every bullet can crit and bosses just disappear, I've one-cycled every raid boss with this setup and it never stops being satisfying, like the pure dopamine hit of watching a health bar go from full to zero in one Fade Away activation is why I keep playing this character

Primary tree Hunter with Megavore capstone, secondary Stalker for The Power Inside, action skill Fade Away with Guerrillas in the Mist and Unblinking Eye augments, class mod Bounty Hunter activates Hunt Skills on boss damage, shield Re-Volter for +200% shock on break or Stop-Gap for survivability, artifact Pearl of Ineffable Knowledge or Company Man, weapons Light Show Monarch Backburner Reflux and honestly any high-crit weapon works, I'm not 100% sure the Carrier is still meta but it was insane last patch so maybe worth trying

Rakk Attack Spam

Constant action skill spam, Rakks trigger anointments and heal FL4K, and it's amazing for mobbing and debuffing, this build is super underrated honestly and people sleep on how much damage the Rakks actually do when built properly, probably my second favorite FL4K playstyle after the crit build

Primary tree Hunter with Head Count and Megavore, secondary Master for Frenzy stacks, action skill Rakk Attack with Rakkcelerate, class mod Rakk Commander or Cosmic Stalker, weapons any with the +100% damage on Action Skill End anoint, shield Frozen Heart or ASS Re-Volter and stuff

Gamma Burst Pet Tank

Pet becomes unkillable during Gamma Burst and FL4K gets massive radiation damage bonus, it's the safest build for solo play and great for learning boss mechanics without dying constantly, I used this build to learn the Empyrean Sentinel raid and honestly without the pet tanking everything I would've quit after the tenth wipe

Primary tree Master with Dominance and Barbaric Yawp, secondary Hunter for Megavore, action skill Gamma Burst, class mod Red Fang makes pet taunt all enemies during Gamma Burst which is honestly hilarious to watch, weapons radiation element and Maliwan for element coverage and stuff like that, you get the idea

Best Weapons for FL4K

WeaponTypeSynergyManufacturer
Light ShowPistol4 projectiles, all crit in Fade AwayJakobs
Lucian's CallARCrit ricochet + ammo return = infinite ammoVladof
MonarchARBipod mode + Fade Away deletes bossesVladof
RefluxSMGCrit chains lightning between enemiesHyperion
CarrierARHoming micro-missiles on critAtlas
HellwalkerShotgunOne-shot, high crit, Jakobs ricochetJakobs

FL4K Leveling Guide

Okay so starting out you want Hunter tree with Leave No Trace and Head Count because they're essential early and will carry you through the first act easily. Then around mid-levels go Stalker tree for Furious Attack and Overclocked which are huge DPS boosts at this level range and honestly Overclocked is way better than it reads on paper. After that rush Hunter capstone Megavore because it's the biggest power spike FL4K gets and you'll notice the difference immediately, I'm not even kidding the jump from not having Megavore to having it is probably the single biggest power spike of any character in the game. In the later levels fill Stalker for The Power Inside plus survivability and by the time you hit max level with this tree path you'll be ready for any content in the game no problem. And for Mayhem respec to Guerrillas in the Mist and farm Re-Volter shield which is basically mandatory for endgame, you can do Mayhem without it but you're making things harder for no reason, and then experiment with different pet choices because the Gunslinger Jabber gives crit damage bonus which is perfect for this setup or whatever, and the Scorcher Spiderant is actually really good too if you need more elemental coverage, basically any pet works but those two are probably the best for crit builds imo

Data sources: Gearbox Entertainment press materials. Borderlands community theorycrafting and build databases.