Who is C4SH and how do you unlock him?
C4SH is Borderlands 4's first DLC Vault Hunter, arriving as part of Story Pack 1: Mad Ellie and the Vault of the Damned, which released on March 26, 2026. He's a robot ex-casino bot whose entire playstyle revolves around dice rolls, Fortune stacks, and a state called Windfall that supercharges his damage. To play as C4SH, you need to own Story Pack 1 (included in the Super Deluxe Edition or Vault Hunter Pack). You don't need to grind through the base game first. Players can create a new character that starts at Level 13 and jumps directly into the DLC content.
C4SH character select screen
C4SH has 3 action skills (Cross-Fire, Sleight of Hand, and Cleromancy), but only one can be equipped at a time. His two main skill trees are Chaos Walking and Roll the Bones. The interaction between Fortune stacks and Windfall is what separates a mediocre C4SH from a genuinely dangerous one. Getting comfortable with that loop is the whole game.
What is the best C4SH build for leveling?
Two viable leveling approaches exist depending on your preferred playstyle. The Cross-Fire build (Chaos Walking focused) is the more beginner-friendly option. The Cleromancy build (Roll the Bones focused) hits harder in single-target scenarios but demands more mechanical awareness.
Cross-Fire leveling build (recommended for beginners)
Cross-Fire is the best action skill for new players because of its auto-aim and Ricochet Chance, letting you clear mobs without needing precise aim. The build focuses on Kinetic damage and stacking Fortune to make Windfall proc more reliably.
Priority skills from the Chaos Walking tree:
- Unleashed (5/5): Increases fire rate with guns and action skills
- Shootist (5/5): Raw gun damage increase
- Trick Shot (3/5): Grants Ricochet Chance; ricochets become Bone Shards that deal Kinetic damage and debuff enemies
- Ride to Ruin: Kill skill that refunds action skill cooldown based on kills during active skill
- Lawless (5/5): Flat Kinetic damage boost
- Pale Rider (3/5): Bonus Kinetic damage on action skills
- Unshaken (5/5): Bonus damage for every Fortune stack lost
- Dusty Trail (5/5): Sliding consumes Fortune stacks for increased gun damage, reload speed, and fire rate
Priority skills from the Roll the Bones tree:
- Luck be a Robot (5/5): Fortune skill that scales action skill cooldown with Fortune stacks
- Red Moon Rising (5/5): Windfall skill that adds bonus Fire damage during Windfall
- Riding High (5/5): Extends Windfall duration
- Luckless: Jinxes nearby enemies on action skill activation (Jinxed enemies take more damage and deal less)
- Can't Stop Winning (5/5): Gives a crit chance with guns and action skills; crits have a chance to trigger Windfall
- Accursed Bones (5/5): Action skill damage Jinxes enemies and grants lifesteal against them
For augments, equip Midnight Showdown and I Like Those Odds as soon as they become available. These are the strongest augment options for boosting mobility and DPS respectively.
Skill progression order (levels 2-60)
Here's the recommended order:
- Levels 2-6: Max Unleashed
- Levels 7-11: Max Shootist
- Levels 12-14: Take Trick Shot to 3
- Level 15: Devil's Tines (unlocks an extra Augment slot)
- Level 16: Ride to Ruin
- Levels 17-21: Max Lawless
- Levels 22-24: Take Pale Rider to 3
- Levels 25-29: Max Luck be a Robot
- Levels 30-34: Max Red Moon Rising
- Level 35: Luckless
- Levels 36-40: Max Riding High
- Levels 41-45: Max Accursed Bones
- Levels 46-50: Max Can't Stop Winning
- Levels 51-55: Max Dusty Trail
- Levels 56-60: Max Unshaken
What weapons should C4SH use?
C4SH's passive skills heavily favor Jakobs guns, and the Blind Box Enhancement Mod gives Jakobs weapons a 40% Ricochet chance on non-critical hits plus one additional possible ricochet. That combination makes the following two weapons particularly strong.
| Weapon | Type | Manufacturer | Key Ability | Best Against |
|---|---|---|---|---|
| Hot Slugger | Shotgun | Jakobs | Damage ramps up after a kill | Single targets, bosses |
| King's Gambit | Pistol | Jakobs | Larger magazine, group clear | Swarms, weak mobs |
| Shalashaska | Pistol | Unknown | Awful loot ability; each stack adds 1 ricochet | Ricochet builds |
| Roulette | Pistol | Unknown | Random buffs on reload; charge shots fire multiple rounds | Flexible use |
The Hot Slugger is the primary damage dealer. Its unique ability scales damage after kills, and with C4SH's elevated Ricochet chance, kills come fast. The King's Gambit fills the gap when you're dealing with groups of weaker enemies and need a slightly larger magazine to keep the pressure up. Both weapons benefit from Windfall's auto-reload on small mags.
What gear and equipment should C4SH equip?
Shield
Firewerks is the top shield pick for C4SH. It's an Armor Shield that spawns homing missiles on kill, dealing 3,732 damage per strike. Its Absorb property also gives a 15% chance to absorb incoming bullets and add them to your equipped ammo. The missiles themselves benefit from C4SH's Ricochet passives.
If you want a defensive alternative, Watts 4 Dinner provides the Overshield Eater ability, increasing the chance for melee hits to drop an overshield.
Repkit
Shiny War Paint is the best Repkit for this build. On use, it grants +30% Fire Rate and +30% Movement Speed for 15 seconds, and reduces Repkit Cooldown by 2 seconds each time you take damage. The fire rate boost directly helps trigger Windfall more reliably.
If you don't have War Paint yet, Triple Bypass is a solid fallback. It has three charges and a 30% chance to restore a charge on each kill.
Ordnance
Sho Kunai is the recommended Ordnance for leveling. Each consecutive hit grants +10% Movement Speed for a short duration, stacking up to 7 times. Since C4SH can throw grenades while his action skill is active, you can keep this buff running almost constantly.
Jakob's Grenade and Waterfall are secondary options if you prefer different utility.
Enhancement Mod
Blind Box is non-negotiable. It gives Jakobs-part weapons a 40% Ricochet chance on non-crits and increases the number of possible ricochets by 1. Both your Hot Slugger and King's Gambit benefit directly, and this mod compensates for their low magazine sizes by letting shots do more work per trigger pull.
All 8 C4SH class mods explained
C4SH has 8 class mods in total, earned by defeating specific bosses. Here's the full breakdown:
| Class Mod | Dropped By | Effect Summary |
|---|---|---|
| Hotshot | Vile Lictor | Cross-Fire's Burst Fire becomes a Beam Spin Attack dealing Fire damage; always crits during Windfall |
| Whale | Ripper Queen Callis | Reduces action skill cooldown to 0; cooldown bonuses convert to action skill damage; Fortune stacks restore 10% cooldown, grant 20% Fire Rate and 25% Reload Speed for 8s |
| Rounder | Idolator Sol | Sleight of Hand gains reduced charges; killing an enemy with a Card grants 2 Charges and resets Action Skill Duration |
| Cooler | Vault Guardian Origo | Ordnance damage Jinxes enemies; killing Jinxed enemies grants +20% Ordnance Cooldown Rate for 12s, stacking up to 10 times |
| Ludopath | Vault Guardian Inceptus | Rolling Bone Dice grants Ludopath Stacks equal to the roll (+3% Fire Rate and +5% Move Speed per stack); max 36 stacks, each lasting 12s |
| Windrider | Vault Guardian Radix | Crit kills double Fortune stacks; non-crit gun kills halve Fortune stacks; Fortune gain restores 5% max health; Fortune loss grants 8% max Overshield |
| Gamer | Mad Ellie World Drop or Nightmare Rifts | Gun crits apply Bleed; killing Bleed enemies with a crit gives 7% chance to spawn a Chaos Totem (14% during Windfall) |
| Hooligan | Bloomreaper the Invincible | Kills grant Hooligan stacks; Grenade damage consumes all stacks for +40% bonus Fire damage per stack (only half consumed during Windfall); max 25 stacks |
How does the Cleromancy build differ?
The Cleromancy action skill (Roll the Bones tree) is the alternative to Cross-Fire and works better for single-target damage and boss farming. Cleromancy gives three charges of dice rolls. Each roll spawns a Bone Totem that fights alongside C4SH. Rolling doubles spawns an enhanced Totem with better stats. During Windfall, dice rolls always produce a unique result.
The key supporting skills for a Cleromancy build include:
- Restless Remains (5/5): Chance to respawn Totems when they die
- Sidekick's Revenge (5/5): Builds Fortune stacks efficiently
- Accursed Bones (5/5): Healing and Jinx application through Totem damage
- Call (1/1): Auto-crits with guns and Bone Totems while active
- Snake Eyes (1/1): Additional roll mechanics
The Cleromancy build also makes heavier use of augments like Heavenly Sevens, Five is Alive, Three's Company, Mighty Nine, Eighths of El, Dirty Dozen, and Easy Sixes to maximize the Totem output.
What passives matter most for any C4SH build?
Regardless of which action skill you pick, certain passives are worth prioritizing in every build. These are the most universally valuable:
Roll the Bones tree:
- Luck be a Robot
- Red Moon Rising
- Riding High
- Luckless
- Can't Stop Winning
- Accursed Bones
Chaos Walking tree:
- Unleashed
- Your Huckleberry
- Trick Shot
- Lawless
- Pale Rider
The pattern is consistent: stack Fortune, trigger Windfall, and then maximize damage output during Windfall windows. Every passive that either generates Fortune faster or extends Windfall duration is worth taking before anything else.
Final build summary
| Slot | Item |
|---|---|
| Action Skill | Cross-Fire (leveling) or Cleromancy (boss farm) |
| Weapon 1 | Hot Slugger (Jakobs Shotgun) |
| Weapon 2 | King's Gambit (Jakobs Pistol) |
| Shield | Firewerks |
| Repkit | Shiny War Paint |
| Ordnance | Sho Kunai |
| Enhancement | Blind Box |
C4SH rewards players who stay aggressive. Keep Fortune stacks building, slide into Windfall as often as possible, and let the Bone Shards from Trick Shot do passive work between shots. The Firewerks missiles and Ricochet chains mean kills generate more kills, which is exactly how Gearbox designed this character to feel.
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