Antewise

Gunk Up — Defect Attack Card in Slay the Spire 2

Updated 17 Oct 2026 Source Slay the Spire 2 card data (spire-codex.com API), 577 cards retrieved 17 October 2026 By
Data status: The facts on this page were checked against the source named above. Game values can still shift with a patch, so re-check anything that looks off.
Gunk Up card art
Gunk Up

Deal 4 damage 3 times. Add a Slimed into your Discard Pile.

CharacterDefect
TypeAttack
RarityCommon
Cost1 Energy
TargetAnyEnemy
Total damage12
Per Energy12.00 → 15.00 upgraded
Hits3 × 4

Card text

Deal 4 damage 3 times. Add a Slimed into your Discard Pile.

Upgraded: Deal 5 damage 3 times. Add a Slimed into your Discard Pile.

Where it sits on the curve

Measured the same way as our efficiency tier list: total damage divided by Energy.

Gunk Up produces 12.00 per Energy at base and <strong>15.00</strong> upgraded. That ranks it 11 of 143 of the 143 attacks with a fixed cost. It sits in the top 93% on this measure.

The measure ignores everything that is not a number. Area damage, conditions and drawbacks are not priced in.

Cards it creates

  • SLIMED

Other Defect cards at 1 Energy

Where to go next

All 577 cards — the full table, filterable by character. Efficiency tier list — every measurable card ranked.

Rarity system explains how often this card appears. Enchantments covers the modifiers that can change it.

Frequently asked questions

What does Gunk Up do in Slay the Spire 2?

Deal 4 damage 3 times. Add a Slimed into your Discard Pile.

What does upgrading Gunk Up change?

Deal 5 damage 3 times. Add a Slimed into your Discard Pile.

How much does Gunk Up cost?

1 Energy. It is a Common Attack card.

Is Gunk Up efficient for its cost?

It produces 12.00 damage per Energy, which ranks 11 of 143 among the attacks that can be measured this way.

More Slay the Spire 2 guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.