From strength stacking to exhaust engines, we break down the four core Ironclad builds and the deck management tricks that keep you alive past Ascension 10.
The Ironclad in Slay the Spire 2 is the most approachable hero, leaning on high-damage swings and his Starter Relic, Burning Blood, which restores 6 HP after every fight. But his true power lies in the build-defining synergies you assemble across a run.
Stacking Strength, converting Block into damage, weaponizing Exhaust, or spending HP for Energy — each path reshapes your climb entirely.
In this guide we’ll cover the four core Ironclad build archetypes, the premium cards that anchor them, and the deck management tricks that keep you alive past Ascension 10.
The Strength stacker: scaling damage
Strength stacking multiplies every hit of attack cards, making multi-hit finishers the obvious payoff. Core enablers are Inflame, Demon Form, and Dominate, which rewards targets with Vulnerable.
Payoff cards like Whirlwind, Sword Boomerang, and Twin Strike apply the bonus repeatedly. Fiend Fire exhausts your hand for a massive 7-damage-per-card burst. Ruined Helmet doubles the first Strength gain each combat, and Paper Phrog raises Vulnerable damage to 75%.
Weaponizing Block: defensive offense
Barricade or Blockade stores Block across turns, and Juggernaut deals damage every time you gain Block. Immovable doubles Block from the first card played each turn, while Iron Wave attacks and defends simultaneously.
Body Slam upgrades to a 0-cost attack that deals damage equal to your current Block, turning defense into offense instantly. Early relics like Gorget (4 Plating) and Sai (7 Block at turn start) kick-start the engine.
Exhaust engine: mid-combat thinning
True Grit, Burning Pact, and Corruption let you strip weaker cards from the deck during combat. Ashen Strike and Pact’s End then scale damage based on the size of your Exhaust pile.
Dead Branch spawns a random card every time you Exhaust, while Charon’s Ashes deals 3 damage to all enemies on each Exhaust trigger. Together they turn card removal into a constant resource loop.
Self-damage: risk and reward
Bloodletting and Offering trade HP for Energy and draw, enabling explosive turns. Rupture converts every point of HP lost on your turn into permanent Strength, making self-damage a scaling tool.
Feed permanently increases Max HP to offset the life cost, so prioritize it early if you’re leaning into this archetype. The Corrupted enchantment pairs well, adding 50% damage at the cost of 2 life per play.
Premium cards and deck optimization
Here are the cards that define the top Ironclad builds.
- Offering: Massive acceleration for a manageable health cost.
- Colossus: Reduces damage from Vulnerable enemies by 50% and grants stacking Block.
- Evil Eye: Doubles its Block if you Exhausted a card that turn.
- Vicious: Draws a card whenever you apply Vulnerable.
- Bloodletting: Common reusable energy source, now even more accessible.
- Pummel Strike: Strong common attack that also provides card draw.
- Break: Deals up to 30 damage and applies heavy Vulnerable for just 1 Energy.
- Hellraiser: Plays any “Strike” card for free when drawn.
Keep your deck between 25–35 cards for consistency; specialized Body Slam or infinite loops work best at 5–8 cards. Remove basic Strikes and Defends at the Merchant (starting cost 75 Gold) and use the Meat Cleaver relic to cook at Rest Sites, removing two cards and gaining 9 Max HP. Tezcatara’s Nutritious Soup makes all Strikes cost 0, fueling high-draw Strike builds.
Surviving Ascension 10 and beyond
At Ascension 10 you face two consecutive Bosses in the final act. Feed must be picked early to scale your Max HP for the increased damage from Deadly and Tough enemies.
Maintain consistent Vulnerable application through cards like Bash, Thunderclap, or Tremble. That keeps Colossus and Vicious active for defense and draw, which are non-negotiable at high difficulty.
Once you lock in the right synergies, the Ironclad’s run becomes a showcase of overwhelming force. The deeper card interactions and boss patterns waiting in later Ascensions are covered across the full Slay the Spire 2 hub in Solo Jugadores.
