Borderlands 3 FL4K Builds – Solo & Pet Builds

We're taking a look at some of the best builds for FL4K in Borderlands 3!

Our Borderlands 3 FL4K Builds Guide features a look at some of the top options for the character and class. We've got different builds for each of the Hunter, Master, and Stalker skill trees! If you're playing the game solo, FL4K is one of the best options for that due to his affinity for pets and ability to fade into the shadows. FL4K is also capable of huge amounts of damage by combining his stealth abilities with skills that increase and guarantee critical hits!

FL4K Builds

We're featuring multiple builds that you can choose from which take advantage of the different skill trees. It's very early in the game's lifespan, so we'll be rotating out builds here and there as more powerful options are discovered!

Crit Hunter/Stalker Build

This is looking like one of the top builds early on for FL4K! It leans heavily on damage and offensive skills, but gives you survivability with HP regeneration, your pet taking the heat from enemies, and the ability to use Fade Away to get out of any trouble. Speaking of that skill, that's going to be your bread and butter on how you dish out the damage to big bosses. Using Fade Away allows you to fire three shots that will all be a critical hit. This can be circumvented by using the Guerillas in the Mist augment that removes the restriction. We take that further with the Unblinking Eye augment that increases critical damage per hit as you land more successive hits.

Once you get to the point where you have Fade Away and the perks for it, you can run a Torgue Shotgun to destroy bosses. You want one that has a lot of pellets (not super important) and can go into sticky mode (pretty sure all Torgues can do this). These can drop anywhere, just keep one if you happen to see it. What you do is go into your fade mode, fire a bunch of shots from the shotgun at the boss and then reload the weapon. When you reload all of the sticky pellets that you placed on the enemy will explode and crit to deal a ton of damage!

We've got a full leveling guide for this build which you can find right here!

Master/Stalker Solo Build

Build Credit to Kiljaz

This is the build that goes all in on your pet, so if you want to focus your power on your beastly friend then this is the one for you. You are utilizing the Gamma Burst skill which creates a Rift at a location of your choosing which teleports your pet through it and deals Radiation Damage to nearby enemies. This is also useful for if your pet goes down, because you can use the skill to revive it as well. The pet we're going to be using is the Eridian Skag! This pet increases your damage and fire rate, and also creates a Singularity when you use an Attack Command which pulls enemies into it. This makes your AOE abilities very powerful, because you can create tight groups of bad guys in a small area.

The build culminates with the Dominance ability. This is a Melee Override Skill, when you melee an enemy it will make them an ally that fights for you for a short time. The enemy constantly loses health while under the effect and it lasts for 12 seconds (double if it is a beast). You can only dominate one enemy at a time, and an enemy can only be dominated once. If you're looking to go solo in Borderlands 3, then this is a great build for it because your pet should keep enemies from focusing on you for very long.

Rakk Attack! Hunter Build

Build Credit to Crazymanfish90

This is an awesome build if you want to just rain down Rakks on top of your enemies and laugh as they are pelted repeatedly by these winged beasts! As mentioned, you take advantage of the Rakk Attack! Action Skill that sends Rakks to dive down on your unfortunate foes. This is helped greatly by the Flock 'N Load Augment that sends two additional Rakks when you use your ability. While that increases the amount sent, the Rakkcelerate Augment increases how often you can send them down! It reduces the cooldown of the skill, allowing for you to jam down on the Rakk Attack! skill much more frequently.

You go all the way down the Hunter tree in this build so you can reach the Megavore Passive Ability. This allows you to score a critical hit on ANY part of the enemy. That means you don't need to hit the weak spot to get a critical hit, and it also means you can get critical hits with your heavy weaponry that doesn't usually have a chance to crit! This is also great against enemies that don't have a weak spot.

About the Author

Evident is a lifelong gamer and creator of websites. He mostly focuses on shooters, but has been known to dabble in the occasional card game as well. You can find him binge watching TV shows in his downtime.

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  1. For your pet build, I would recommend not getting dominance. It’s not really a useful skill at higher levels, primarily for bosses. I recommend going all the way down to the stalker list to get the double damage buff for you and your pet when your at full health.

    I would would also remove points from the “Go for the eyes” skill as your pet rarely does crits for this skill to be useful enough. I would set up the beast master skill as follows. (Granted you have the legendary mod Red Fang – Taunts all enemies while gamma burst isn’t active) +2 Ferocity, +2 eager to empress, + 1 he bites)

    Skills: Gamma Burst
    Passives: Atomic Aroma, Endurance
    Pet: Great Horned Skag
    + 5 ferocity
    + 3 Persistence hunter
    + 5 Frenzy
    +2 He bites
    +3 Who rescued who
    +1 Psycho head
    +1 Mutated Defenses
    +2 Pack tactics

    I recommend using Great horned Skag as they tend to attack more and provide damage and gun damage buffs. The eridium Skag ‘s singularity pull isn’t needed with the RED FANG mod on as it already taunts all enemies to the Skag. Believe me they will surround your pet.

    For the Stalker Tree

    +5 Furious attack
    +3 Sic em
    + 4 Eager to impress
    +1 Lick the wounds or extra point else where
    + 3 Turn tail and run
    + 3 Fast and furious
    + 5Hidden Machine
    + 2 Rage and recover
    + 1 The power inside

    With points all the way down to the power inside. With gamma Burst active, granted you are at full health will provide 50% damage for your pet for 15 seconds.

    The main job for the player in this build is to support your pet, and let it tank all enemies. The health regen your pet receives from you killing enemies or damaging them will help to keep your pet alive. Also with turn tail and run, shotties, pistols or snipers from afar will gain that extra damage buff by staying still instead of moving for health regen.

    This build has helped me play solo on TVHM on Mayhem 3. Bosses and badasses alike have been tainted by my pet with the Red Fang Mod on. This build is also good with a team, as your pet will tank all enemies and your team just focuses on killing. Good hunting!

  2. On the crit build.. i would ask why you would use the red creature instead of the green one the boost your crit ? Since the red only boos health regen and damage resistance if i’m not mistaken ?