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Effect

When you defeat a boss, any damage dealt beyond the boss's remaining HP is counted as overkill damage. This excess damage is converted into coins, with higher overkill values yielding more coins. Since the combo multiplier scales all damage, a strong combo chain on the killing blow generates massive overkill and therefore massive coin gains.

Location

Found in the Mini Bridge area, alongside the Stardust Anvil. Both relics can often be targeted in a single exploration push through that area.

Rating: ★★★★★

A game-changing economy relic that rewards aggressive, high-combo play with substantial coin income. The late game demands significant spending on card upgrades, gem purchases, and arcana enhancements — Overkill ensures you'll have the funds to do all of it and more.

Strategic Value

  • Always aim to land the finishing blow on bosses while maintaining your highest possible combo multiplier
  • Stacks with Ultimate Ultra Overkill, which raises the cap on how much excess damage can be converted, enabling even larger coin payouts
  • Becomes exponentially powerful when combined with Greed-type Arcana that multiply final coin gains
  • Ovenkilt extends the effect to all encounters (not just bosses), turning every fight into a coin farming opportunity
  • Use the extra coins to buy more arcana and upgrades that boost your combo multiplier further, creating a powerful positive feedback loop
  • Aim for builds that consistently hit 8+ combo chains before the finishing blow for the best overkill returns