Bounce Synergy
Bounce mechanics use a multiplicative damage-per-reflection formula. It has the highest theoretical damage ceiling of all mechanics, but requires setup to create a sustainable bounce loop.
Best for: Open-stage layouts and prolonged fights. Effective against large boss hitboxes.
Recommended Passives 馬車の車輪ゴムのヘッドバンド銀の弾丸
Each bounce stacks Sinner's +5%. Wagon Wheel adds +30% per wall hit and Rubber Headband +20% speed. Ascetic's 90° reflection accelerates the loop.
Pierce Synergy
Pierce builds hit every enemy in a straight line per shot, giving them unmatched crowd-clear potential. They excel in stages with multiple simultaneous targets like Factory (shield enemies) and Castle (multiple elites).
Best for: Stages where enemies line up horizontally. Also effective against shielded enemies.
Recommended Passives エーテルのマント幽霊のコルセット銀の弾丸
Pierce hits every enemy while Phantom Relic adds +50% on each wall hit. The straight→wall→reflect→straight loop accumulates heavy damage on all enemies.
DoT Synergy
DoT builds weaponize Sisyphus's 4× scaling on poison, burn, and bleed to turn sustained damage into primary damage. Lower action intensity and once assembled, damage accumulates automatically.
Best for: Stages with many enemies (Park/Stage 3). Also effective for sustained boss damage.
Recommended Passives かわいそうなタマネギ深夜の油圧力弁魔法の杖
Sisyphus's 4× turns DoT into main damage. Burn 16-32 DPS, Poison 4-16 DPS. Onion 4× = 24-48 DPS. Nuclear Bomb 4× = 2400-4800 damage.
Baby Ball Synergy
Baby ball builds exploit a hit-generates-baby chain reaction that compounds with every collision. Effectiveness scales with enemy density. Known for visually chaotic screens filled with baby balls.
Best for: Dense enemy waves. Better at clearing mobs than dealing single-target boss damage.
Recommended Balls 卵のうブルードマザー
Recommended Passives 戦いのラッパガラガラ鉄のロンパース
Cornucopia spawns extra babies on each generation. Brood Mother hits trigger more babies. Iron Onesie raises every baby ball's damage.
Critical Synergy
Critical builds combine 60% crit rate, Dark 3×, and 5% instakill for the highest single-target damage in the game. However, all four daggers must be collected before the Deadeye Cross ability unlocks, making this the slowest build to assemble.
Best for: Single-target high-HP boss fights. Particularly effective against Pit Lord (Stage 8).
Recommended Balls 暗闇ファントム
Recommended Passives 狙撃手のアミュレットルビー柄の短剣ダイヤ柄の短剣サファイア柄の短剣
Four daggers → Deadeye Cross (60%) → Gracious Impaler → Impale (5% instakill). Dark 3× × crit = massive damage. 5% instakill works on bosses too.
Melee Synergy
Melee builds exploit a 50% on-contact instakill mechanic unique to this playstyle. This requires charging into enemies rather than keeping distance — a completely different play pattern from other builds. Mob clear speed is the fastest, but boss damage requires the Torturer Mask passive.
Best for: Charging into dense mob groups. Particularly effective against the undead horde in Cemetery (Stage 5).
Recommended Passives かわいそうなタマネギトゲ付き首輪いばらの冠
Putrid Husk grants 50% on-touch instakill, Torturer Mask 10% on-detect kill. Onion DoT compounds — charging into mobs wipes them.