Unrelenting•Attack

Is Unrelenting good in Slay the Spire 2?

In Slay the Spire 2, Unrelenting is an uncommon attack from the Ironclad card pool. Its effect: Deal 12 damage. The next Attack you play costs 0 -cost. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.

Over 62 tracked runs its win rate sits at 25.4%, 6.5% ahead of the 18.9% all-deck baseline. It sees niche play, included in only 1.6% of eligible runs. Within Ironclad runs it’s drafted 8.6% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.2 copies on average.

Its standout pairing so far is Cascade, which lifts its win rate by +18.9% when the two share a deck. On the relic side, Pocketwatch is its standout companion, worth a +21.3% win-rate swing alongside it. It costs 2 energy, gets upgraded 32.4% of the time, and tends to be picked up near floor 13.

Upgrading the card adds +6 Damage to its stat line. Of the runs that drafted it, 14 ended in victory against 41 deaths and 7 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 8.1% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Unrelenting fits a Ironclad deck.

Best Cards to Pair with Unrelenting

Unrelenting’s strongest card pairings so far are Cascade (+18.9%), Regret (+17.2%), and Ascender's Bane (+15.5%), each shown with the win-rate lift it adds.

Cascade+18.9%7 runsRegret+17.2%3 runsAscender's Bane+15.5%7 runsJuggling+14.2%5 runsSecond Wind+14.2%4 runsStoke+14.2%4 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Unrelenting Win Rate by Class

Of the 2 classes that draft Unrelenting, it performs best with Ironclad (25.9%) and Silent (0.0%).

The Ironclad25.9%61 runsThe Silent0.0%1 runs

Best Relics for Unrelenting

The relics that swing Unrelenting’s win rate the most are Pocketwatch (+21.3%), Centennial Puzzle (+19.5%), and Regal Pillow (+18.9%), with each lift shown.

Pocketwatch+21.3%4 runsCentennial Puzzle+19.5%9 runsRegal Pillow+18.9%7 runsAnchor+17.3%11 runsBag of Marbles+17.3%10 runsNunchaku+15.5%6 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Unrelenting Card Details

A 2-energy uncommon attack, Unrelenting is upgraded 32.4% of the time and tends to enter the deck around floor 13.

Deal 12 damage. The next Attack you play costs 0 -cost.

Upgrade: +6 Damage

What Ends Runs with Unrelenting

Runs holding Unrelenting end most often against Knowledge Demon Boss (8.1%), Test Subject Boss (6.5%), and Decimillipede Elite (4.8%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss8.1% of runs
• Test Subject Boss6.5% of runs
• Decimillipede Elite4.8% of runs
• Queen Boss4.8% of runs
• Kaiser Crab Boss4.8% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.