Ironclad Complete Guide

Ironclad Complete Guide

The Ironclad is the quintessential warrior of Slay the Spire 2, combining raw power with surprising versatility. With 80 HP and the Burning Blood relic that heals 6 HP at the end of every combat, the Ironclad is the most forgiving character for new players while still offering deep strategic complexity at higher Ascension levels. Compared to the Silent's precision poison and shiv strategies, the Defect's orb manipulation, the Regent's unique mechanics, or the Necrobinder's summoning playstyle, the Ironclad wins through brute force, efficient blocking, and powerful synergy engines.

The Ironclad's starting deck consists of five copies of Strike, four copies of Defend, and one copy of Bash. Bash is one of the strongest starting cards in the game, applying Vulnerable to enemies and enabling massive damage swings in the early acts. Your starting energy is 3 per turn, which means every card addition and removal needs to be carefully considered for energy efficiency.

Core Mechanics

Strength

Strength is the Ironclad's signature scaling mechanic. Every point of Strength adds 1 damage to every instance of attack damage you deal. This means multi-hit cards like Twin Strike, Sword Boomerang, and Whirlwind scale exceptionally well with Strength. Cards like Inflame provide immediate Strength boosts, while Demon Form offers 2 Strength per turn for the rest of combat, turning even modest attacks into devastating blows. Colossus provides a large one-time Strength increase. The key to Strength scaling is understanding that it is additive per hit, so a Sword Boomerang hitting 3 times with 10 Strength adds 30 total bonus damage.

Exhaust

Exhaust is a mechanic where cards are removed from your deck for the remainder of combat when played or discarded by certain effects. While this sounds like a downside, the Ironclad has an entire archetype built around turning Exhaust into a strength. Dark Embrace draws you a card whenever a card is exhausted, Feel No Pain grants Block whenever a card is exhausted, and Second Wind exhausts all non-Attack cards in your hand while gaining Block for each. Burning Pact lets you exhaust a card to draw 2, and Fiend Fire exhausts your entire hand to deal massive damage. Stoke is another powerful exhaust payoff that rewards you for leaning into this strategy.

Self-Damage and HP as a Resource

The Ironclad is unique in treating HP as a spendable resource. Burning Blood heals 6 HP after every fight, which means taking small amounts of self-damage is effectively free. Offering costs 6 HP but gives you 2 energy and draws 5 cards, making it one of the best cards in the entire game. Hemokinesis deals damage to you but outputs huge damage to enemies. Bloodletting loses HP but gains energy. Brutality costs 1 HP per turn but draws an extra card. Crimson Mantle and Rupture turn self-damage into Strength gains, creating a powerful engine. Spite, Pact's End, and Blood Wall all interact with this self-damage theme in meaningful ways.

Vulnerable

Vulnerable is a debuff that causes enemies to take 50% more damage from attacks. Bash applies Vulnerable from turn one, and many Ironclad cards like Uppercut, Thunderclap, and Stomp can apply it as well. Keeping enemies Vulnerable is critical for the Ironclad's damage output, especially in longer fights where the bonus damage compounds significantly. Evil Eye is a notable card that helps maintain Vulnerable pressure throughout a fight.

Key Archetypes

Strength Scaling

The Strength scaling archetype is the Ironclad's most straightforward and powerful strategy. The goal is to accumulate as much Strength as possible and then deal massive damage with attack cards that hit multiple times or benefit disproportionately from Strength bonuses.

Core cards for this archetype include Demon Form, which provides 2 Strength every turn and is the single best scaling card for long fights. Inflame gives an immediate Strength boost and is excellent for Act 1 damage. Colossus provides a large one-time Strength increase that can turn a fight around. Rupture gains Strength whenever you lose HP from a card, synergizing beautifully with Brutality, Bloodletting, Hemokinesis, and Offering.

The best damage dealers for a Strength build are Whirlwind, which hits all enemies multiple times and scales incredibly with Strength. Sword Boomerang hits a random enemy 3 times, making each point of Strength worth triple. Twin Strike hits twice for double Strength value. Rampage grows in damage each time you play it, stacking with Strength for absurd totals. Heavy Blade variants like Perfected Strike also benefit enormously. Bludgeon delivers a single massive hit that becomes overwhelming with high Strength. Molten Fist is another solid multi-hit option.

Supporting cards include Headbutt to cycle your best damage cards back to the top of your draw pile, Pommel Strike for card draw to find your key pieces, and Armaments to upgrade cards in hand. For defense while you scale, Shrug It Off provides Block and draws a card, and Flame Barrier punishes enemies who attack into it.

Exhaust Engine

The Exhaust engine is one of the most powerful and satisfying archetypes in the game. When fully assembled, it draws through your entire deck every turn, generates massive Block, and deals huge damage, all while thinning your deck to only the most powerful cards.

The engine revolves around Dark Embrace and Feel No Pain as payoff cards. Dark Embrace draws a card whenever you exhaust a card, meaning every exhaust effect replaces itself. Feel No Pain generates Block on each exhaust, making you nearly invincible when the engine is running. Stoke adds additional exhaust payoff that can make the engine even more powerful.

Key fuel cards include Second Wind, which exhausts all non-Attack cards in your hand and gains Block for each, often generating 30 or more Block in a single play while triggering Dark Embrace and Feel No Pain multiple times. Burning Pact exhausts a card to draw 2, giving you card selection and engine fuel. Fiend Fire exhausts your entire hand to deal damage equal to each card exhausted, serving as both fuel and a finisher. Infernal Blade generates a random Ironclad Attack, giving you more cards to exhaust or play.

True Grit provides Block and exhausts a card, making it both defensive and an engine piece. Offering is incredible in exhaust decks because the card draw helps you find your engine pieces faster. Havoc plays the top card of your draw pile and exhausts it, feeding your engine automatically. The beauty of this archetype is that as you exhaust cards, your deck gets smaller, making it easier to draw your remaining power cards every turn.

Block and Barricade

The Barricade archetype focuses on accumulating Block that carries over between turns, eventually becoming completely untouchable while dealing damage through Body Slam or Juggernaut procs.

Barricade is the centerpiece, a Power that makes your Block persist between turns instead of expiring. Once Barricade is active, every point of Block you generate is permanent for the rest of the fight. Impervious generates a massive amount of Block in a single card, and with Barricade active, that Block stays forever. Body Slam deals damage equal to your current Block, turning your defense directly into offense.

Flame Barrier provides Block and deals damage back to enemies that hit you, which is even better when that Block persists. Juggernaut deals damage to a random enemy every time you gain Block, turning every defensive card into chip damage. Shrug It Off, Iron Wave, and True Grit all generate Block while providing secondary benefits. Stone Armor provides solid Block generation for this strategy. Armaments can upgrade your Block cards in hand to generate even more Block per turn.

This archetype is particularly strong against enemies with predictable attack patterns, as you can stack Block during non-attack turns and maintain it through attack turns. Demonic Shield provides additional Block synergy. The main weakness is that Barricade costs 3 energy, so you need either energy relics or Offering to play it comfortably while still blocking on the same turn.

Berserk and Self-Damage

The Berserk archetype treats the Ironclad's HP as a resource, spending life to gain powerful effects and using cards that synergize with self-damage. This is the highest-risk, highest-reward archetype the Ironclad has access to.

Brutality draws an extra card each turn at the cost of 1 HP, and this HP loss triggers Rupture for free Strength. Crimson Mantle provides another way to convert self-damage into power. Offering is the crown jewel, spending 6 HP for 2 energy and 5 cards drawn, an absurd rate of exchange especially when your Burning Blood heals 6 HP after combat. Pact's End and Spite are powerful cards that reward you for engaging with the self-damage theme.

Hemokinesis costs HP but deals heavy damage, and triggers Rupture. Bloodletting loses HP for energy, fueling big turns while also triggering Rupture. Blood Wall converts your HP management into defensive power. The key to piloting this archetype is understanding that HP is not precious when you have Burning Blood and can end fights quickly. Every point of HP spent on Offering or Bloodletting that results in killing an enemy one turn faster is HP well spent, because damage you never take is better than Block you had to generate.

Forgotten Ritual is a notable card that can set up powerful turns at an HP cost. The self-damage archetype pairs naturally with Strength scaling through Rupture, and with Exhaust through cards like Burning Pact and Fiend Fire. Many of the best Ironclad decks blend elements of multiple archetypes rather than committing purely to one.

Best Relics for the Ironclad

Burning Blood is your starting relic and it is surprisingly powerful. The 6 HP heal after every combat means you can take small amounts of damage during fights and in events without it snowballing. This makes self-damage cards essentially free in most combats.

When evaluating relics from shops, chests, and boss rewards, prioritize energy relics above almost everything else. Going from 3 to 4 energy per turn is a massive power spike for every Ironclad archetype. Strength-granting relics are excellent for obvious reasons. Relics that provide card draw help you find your key cards more consistently. Block-generating relics pair well with Barricade strategies.

Pael's Tears, Pael's Tooth, and Pael's Wing are notable relics that can significantly impact your run depending on your archetype. Any relic that synergizes with Exhaust mechanics or Strength scaling should be prioritized. Avoid relics that conflict with your archetype, such as relics that penalize HP loss if you are running a self-damage build.

Boss Matchup Tips

Act 1a Bosses

Against Ceremonial Beast, focus on applying Vulnerable with Bash early and dealing front-loaded damage. The Ironclad's Strength scaling can overwhelm this boss before its damage ramps up. Prioritize killing any minions quickly with AOE like Thunderclap or Whirlwind. Against Kin Priest, be prepared for healing mechanics and try to burst through its HP with high-damage attacks. Vantom requires careful Block management, so cards like Shrug It Off and Flame Barrier are valuable here.

Act 1b Bosses

Lagavulin Matriarch is one of the trickiest Act 1b bosses for the Ironclad because she debuffs your Strength. Having multiple sources of Strength or ways to avoid the debuff is important. Try to end this fight quickly before the debuffs stack up. Demon Form is incredible here if you have it, as the ongoing Strength gain counteracts the debuffs. Soul Fysh requires sustained damage and good Block cycling. Shrug It Off and Pommel Strike help maintain hand quality throughout this longer fight.

Act 2 Bosses

Kaiser Crab demands strong Block generation. Barricade or Impervious shine in this fight. Body Slam becomes an excellent win condition if you can stack enough Block. Knowledge Demon tests your deck's consistency and ability to handle variable situations. A well-built Exhaust engine trivializes this fight by drawing through your deck reliably. The Insatiable is a DPS race where Strength scaling and Whirlwind are your best friends. Front-loaded damage from Bludgeon, Hemokinesis, and Fiend Fire can be crucial.

Act 3 Bosses

Doormaker is a complex multi-phase fight where deck versatility matters. Having both scaling and front-loaded damage is important. Exhaust decks excel here because they become more consistent as the fight progresses. Test Subject #C10 is the ultimate test of your build. Demon Form provides the sustained scaling needed for this long fight. Barricade plus Body Slam is one of the most reliable strategies. Make sure your deck can handle both single-target and AOE situations, as the fight demands flexibility.

Advanced Tips and Strategy

Card Removal Priority

Removing Strikes from your deck is one of the most impactful things you can do in the early game. A Strike deals minimal damage relative to almost any card you could draw instead. Prioritize removing Strikes at every opportunity, especially at shops and events. In most cases, removing a Strike is better than adding a mediocre card. Defends are lower priority for removal unless you have a specific plan to replace your Block generation, since taking unblocked damage in Act 2 and beyond is severely punishing.

Energy Management

The Ironclad has excellent energy generation tools. Offering provides a massive burst of 2 extra energy plus card draw. Bloodletting converts HP into energy for big turns. Understanding when to play high-cost cards versus efficient low-cost cards is crucial. A common mistake is drafting too many 2-cost and 3-cost cards without enough energy to play them. If your deck is expensive, prioritize Offering and energy relics. If your deck is lean and cheap, you can focus on card draw instead.

When to Pivot Archetypes

One of the most important skills in Slay the Spire 2 is knowing when to pivot your strategy. If you start building toward Strength scaling but get offered Dark Embrace and Feel No Pain, consider pivoting to Exhaust. The Ironclad's archetypes have significant overlap, and hybrid decks are often the strongest. A deck with Demon Form for scaling, Feel No Pain for defense, and Offering for burst turns is not committed to any single archetype but takes the best elements of each.

Act 1 Priorities

In Act 1, prioritize damage cards over defensive cards. Bash carries your defense by keeping enemies Vulnerable, and fights in Act 1 are short enough that killing enemies faster is better than blocking more. Cards like Inflame, Pommel Strike, Anger, and Uppercut are excellent early pickups. Iron Wave is a solid early card that provides both offense and defense. Avoid picking up too many Powers in Act 1 because you need cards that have immediate impact in short fights. Breakthrough can help thin your deck while dealing damage.

Scaling for Later Acts

By Act 2, you need to have a plan for scaling. Strength builds need Demon Form or multiple copies of Inflame. Exhaust builds need at least one payoff card like Dark Embrace or Feel No Pain. Barricade builds need Barricade itself and Body Slam. Without a scaling plan, your deck will be overwhelmed by enemies in Act 2 and Act 3 who have hundreds of HP and deal massive damage per turn.

Synergy Combos

Some of the most powerful combos in the Ironclad's kit include Barricade plus Impervious plus Body Slam, which generates massive Block that persists and then converts it all into damage. Demon Form plus Whirlwind scales infinitely against multiple enemies. Dark Embrace plus Second Wind draws your entire deck while generating huge Block through Feel No Pain. Rupture plus Brutality plus Offering generates free Strength every turn while maintaining card advantage. Grapple provides both damage and Block, making it versatile in multiple archetypes. Taunt helps control enemy targeting in multi-enemy fights. Expect a Fight gives you Block at the start of combat for free.

Dominate is worth special mention as a card that can end fights outright in the right circumstances. Unrelenting provides staying power in longer engagements. Cascade can deal impressive damage when your deck has the right composition. Brand and Hellraiser are rare attacks that can serve as powerful finishers. Reaper is exceptional in Strength builds because it heals you for the damage dealt, combining offense with sustain. Immolate provides strong AOE damage. Primal Force is a devastating finisher with high Strength. One-Two Punch rewards careful play sequencing.

Flanking, Leading Strike, and Follow Through from the card pool reward specific card ordering and hand management. Escape Plan, Dodge and Roll, and Backflip are more associated with the Silent's defensive toolkit, but understanding how the Ironclad's Block generation compares helps you evaluate your defensive options. The Ironclad's Block cards like Shrug It Off and Impervious are less efficient per energy than some Silent cards but are supplemented by Feel No Pain and Barricade for total Block generation.

Final Thoughts

The Ironclad rewards aggressive play and strategic HP management. Unlike the Silent who wants to avoid all damage, or the Defect who wants to set up orbs before engaging, the Ironclad is happiest when trading blows and coming out ahead through superior Strength, Block retention, or Exhaust value. Lean into the character's strengths, literally, and you will find one of the most satisfying and powerful characters in Slay the Spire 2.