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Fast-Clear Builds

Once you know the evolution recipes, the next question is which combinations actually scale into the endgame. Not every evolution is worth building around. The three builds below are the ones that consistently push through HEAVENLYxGATES and into VASTxVOID.

Build 1: Nuclear Propagation​

Core balls: Nuclear Bomb (Bomb + Poison) and Maggot (Brood Mother + Cell)

This is the most popular fast-clear build in the game, and for good reason. It runs on a simple loop:

  1. Fire the Nuclear Bomb. It detonates and kills everything on screen.
  2. Every enemy killed by the explosion triggers Maggot's passive, which spawns baby balls for each kill.
  3. The baby balls flood the screen, dealing chip damage and blocking incoming enemies during the Nuclear Bomb's 3-second cooldown.
  4. Fire the Nuclear Bomb again. Repeat.

The baby ball flood gives you free defense between detonations. In dense waves, a single Nuclear Bomb can spawn 30+ baby balls, effectively creating a wall that nothing can push through.

Best characters for this build:

  • The Cohabitants: Dual projectile firing doubles the rate at which you trigger Maggot spawns.
  • The Makeshift Sisyphus: The 4x status effect multiplier makes the Nuclear Bomb's lingering poison absurdly strong.
  • The Itchy Finger: Double shot speed means double Nuclear Bomb firing rate. The build becomes a conveyor belt of explosions.
tip

If you find a Cornucopia passive evolution (War Horn + Baby Rattle), take it. It massively increases baby ball output, which makes the defensive wall between Nuclear Bombs almost impenetrable.

Build 2: Dual-Phase Execute​

Core balls: Flash x Hemorrhage (single-target) and Black Hole Sun (wave clear)

This build separates your damage into two jobs instead of asking one ball to do everything.

Boss killing (Flash x Hemorrhage): Flash blinds the boss for 2 seconds on every hit, cutting incoming projectile output. Hemorrhage applies compounding bleed stacks that bypass standard boss armor scaling. The longer the fight, the stronger the bleed gets.

Wave clearing (Black Hole Sun): Black Hole (Sun + Dark) instantly kills the first non-boss enemy it hits. The 7-second cooldown is brutal, but against non-boss waves it only needs one hit to remove the biggest threat. Use your other balls to clean up the rest.

Best characters for this build:

  • The Embedded: Infinite pierce on the outbound trip means Hemorrhage hits every enemy in a line, stacking bleed across all of them.
  • The Shade: Top-of-screen ball launch changes the trajectory angle, giving better coverage for Flash's global blind effect.

Build 3: Holy Laser x Maggot​

Core balls: Freeze Ray (Freeze + Laser) or Flash + Maggot (Brood Mother + Cell)

A sustained-damage alternative to the Nuclear Propagation build. Instead of burst detonations with cooldowns, this build deals continuous piercing light damage. Every kill from the laser triggers Maggot replication, keeping the screen flooded with baby balls at all times.

The advantage over Nuclear Propagation is uptime. There is no cooldown window where you are vulnerable. The disadvantage is lower peak damage, which means tougher elite enemies take longer to go down.

Best characters for this build:

  • The Repentant: 5x damage per bounce plus pierce on the return trip means the laser hits everything twice with escalating damage.
  • The Physicist: Gravity pull keeps the laser projectiles near the top of the screen longer, increasing total hit count before they fall.

Passive Synergies That Change Builds​

The right passive can be more important than your third or fourth ball. These are the ones that make or break endgame runs.

Full Metal Rapier (Swarm Scalar)​

Calculates bonus damage based on the number of baby balls and enemies currently on screen. The more entities exist, the harder it hits.

Why it matters: On characters that double projectile output (The Cohabitants, The Falconer), baby ball counts skyrocket. When the screen is full of 40+ entities, Full Metal Rapier hits harder than most evolved balls.

Pairs best with: Cornucopia passive evolution, Maggot, any baby ball generator.

Sword Breaker (Attrition Scalar)​

Cuts your base damage by 25%, but adds a 1% compounding damage stack for every enemy on screen. In early biomes with low enemy counts, this is terrible. In VASTxVOID, where enemy density peaks at 300+, it results in a net damage multiplier over 300%.

Pairs best with: Late-game biomes only. Do not equip this in BONExYARD or SNOWYxSHORES.

Argent Stopwatch (Penetration Scalar)​

Starts projectile damage at 150% of base, but subtracts 30% for every bounce. After five bounces, the ball is dealing negative bonus damage.

This passive is character-specific. It is incredible on The Embedded (infinite pierce, no bouncing) and terrible on The Repentant or The Flagellant (who rely on bouncing for their damage multipliers).

Best combo: The Embedded + Argent Stopwatch + Poison. The ball pierces an infinite line of enemies at 150% damage and never bounces, so the 30% penalty never triggers.

Arrow of Fate (Reflector Shield)​

Blocks incoming enemy projectiles and fires retaliatory baby balls when you get hit.

On its own, Arrow of Fate is a solid defensive passive. But pair it with Mosquito Swarm (Vampire + Egg Sac) and something interesting happens: the retaliatory baby balls trigger Mosquito Swarm's vampiric healing. Enemy bullet-hell patterns become an infinite healing loop. The more they shoot at you, the more HP you recover.

Best combo: Arrow of Fate + Mosquito Swarm on The Flagellant (who needs the survivability because bottom-screen bouncing increases exposure to enemy fire).

Deep Biome Boss Strategies​

VASTxVOID​

The final biome throws extreme enemy density and bosses with massive health pools. Burst damage alone cannot keep up because boss HP scales exponentially.

Strategy 1: The Carouser Orbital Laser

The Carouser's quirk forces returning balls to orbit around you. If you equip a Freeze Ray or evolved Laser, the orbiting ball creates a continuous damage ring. Walk directly into the boss hitbox and let the orbiting laser register frame-by-frame hits without travel time. This bypasses the biggest DPS loss in the game (waiting for balls to travel to the target and back).

Strategy 2: The Itchy Finger + Timestop Burst

Timestop (Time + Freeze) pauses all enemies for 5 seconds. During that window, The Itchy Finger's double shot speed and unrestricted autofire lets you dump your entire inventory into a frozen target. No evasion, no dodging, just raw damage. Time your Timestop for when the boss is at its most dangerous attack phase.

SMOLDERINGxDEPTHS (The Serpent)​

The Serpent is the hardest non-final boss. It has segmented armor nodes and a toxic spray attack that covers the screen over time. Standard AoE and direct-hit builds fail because the armor nodes block damage to the core.

Strategy 1: Erosion (Time + Wind)

Erosion shaves 3% to 5% of max HP per hit and ignores armor entirely. Because it pierces infinitely, it bypasses the armor nodes and hits the core directly. This is the fastest way to kill The Serpent if you have access to the Time and Wind balls.

Strategy 2: Sisyphus DoT Melt

The Makeshift Sisyphus cannot deal direct damage, but the 4x status effect multiplier turns high-tier Poison or Burn into armor-melting DoT. Apply Poison to the entire Serpent, and the stacking damage melts all armor nodes at once instead of forcing you to break them one by one.

warning

If you are running a bounce-heavy character (The Repentant, The Flagellant) against The Serpent, you need to plan around the toxic spray. The spray pools at the bottom of the screen. Bottom-screen bouncers like The Flagellant will take constant damage from it. Bring healing or switch characters.