The Ironclad is the ideal starting point for anyone new to Slay the Spire 2. Armed with a demonic pact and a knack for turning pain into power, he hits hard, heals after every fight, and offers multiple viable deck archetypes that reward both aggressive and defensive players. Whether you want to stack Strength until enemies crumble in one hit or build an impenetrable wall of Block, the Ironclad has a path for you.
Ironclad card draft screen
Who Is the Ironclad?
The Ironclad is described as the last of his kind, channeling hellish resilience through every encounter. His starting relic, Burning Blood, heals him for a small amount at the end of each combat, giving him a natural sustain advantage no other character starts with. This makes early-game mistakes far more forgiving and is a big reason he is considered the most beginner-friendly character in Slay the Spire 2.
His core mechanics revolve around three pillars:
- Strength scaling (ramping flat damage bonuses across all attacks)
- HP manipulation (spending health as a resource to gain power)
- Exhaust synergies (turning discarded cards into meaningful effects)
Strengths and Weaknesses
tip
The Ironclad's low skill floor makes him perfect for learning Slay the Spire 2 fundamentals, but his moderate ceiling means experienced players may eventually find him less flexible than other characters.What Are the Best Ironclad Builds?
There are four reliable archetypes worth building around. Each suits a different playstyle and card pool, so knowing which direction to commit to early is key.
Strength Build
The Strength Build is the most straightforward path to victory. The plan is simple: stack Strength buffs early, then unleash multi-hit attacks that multiply that bonus across every strike.
Key Cards:Demon Form, Whirlwind, Heavy Blade
To set up Strength, prioritize cards like Flex, Demon Form, Spot Weakness, Inflame, and Limit Break. Upgrading Limit Break removes its Exhaust downside, which opens the door to exponential Strength growth over multiple turns.
Once Strength is stacked, multi-hit attacks become your primary damage dealers. Whirlwind, Sword Boomerang, and Twin Strike each apply the Strength bonus on every individual hit. Heavy Blade stands apart with its own built-in Strength multiplier, making it exceptional for burst damage.
Strength scaling power cards
Recommended Relics:
- Orichalcum provides free Block, letting you focus energy entirely on Strength stacking
- Horn Cleat and Captain's Wheel serve the same purpose as passive Block sources
tip
Applying Vulnerable to enemies before unleashing Strength-boosted attacks dramatically increases your burst damage. Pair it with Reaper for massive healing returns when your damage is high.Block Build
The Block Build flips the usual defensive logic on its head. Rather than blocking purely to survive, you accumulate Block and convert it directly into offense.
Key Cards:Body Slam, Entrench, Barricade
Barricade is the engine of this deck. It allows Block to persist between turns instead of resetting, so you can stack it to enormous values. Body Slam then converts that Block total into direct damage. Juggernaut adds a passive damage effect each time you gain Block, giving you offense even while defending. Iron Wave and Flame Barrier round out the kit with combined offense and defense in a single card.
Recommended Relics:
- Calipers acts as a budget Barricade without costing a card slot or energy
- Bronze Scales adds a Thorns effect that punishes enemies for attacking into your wall
important
Passive armor sources like Plated Armor and Metalicize are especially powerful here since they add Block without spending card plays. Cards like Intimidate and Disarm reduce incoming damage and help preserve your stacked Block longer.
Barricade block stacking UI
Exhaust Build
The Exhaust Build turns the normally negative effect of removing cards from your deck into a source of consistent power and cycling.
Key Cards:Corruption, Dark Embrace, Feel No Pain
These three powers form the core of the archetype. Corruption makes all Skill cards cost 0 energy but Exhausts them after play. Dark Embrace draws a card whenever something is Exhausted. Feel No Pain generates Block on each Exhaust. Together, they create a loop where you burn through Skills rapidly, drawing constantly while building Block.
Adding Juggernaut deals damage on every Exhaust trigger, turning the cycle into offense as well. Since most of the Ironclad's Skills provide Block, this archetype naturally overlaps with the Block Build strategy.
Recommended Relics:
- Dead Branch generates a random card each time one is Exhausted, ensuring you never run dry
- Medical Kit lets you play Status cards and Exhaust them intentionally for additional triggers
tip
Once the Exhaust loop is running with Dead Branch in play, the deck becomes extremely fast. With Body Slam or Juggernaut active, you can frequently end fights in one or two turns.Bloodletting Build
The Bloodletting Build is the most aggressive and risky of the four. Cards that damage the Ironclad when played are generally stronger than standard cards, and this deck uses synergistic Powers to make that self-damage a net positive.
Key Cards:Rupture, Brutality
Rupture converts self-damage into Strength stacks, which you can then double with Limit Break. Brutality guarantees a self-damage trigger each turn for consistent Strength gain. Hemokenisis is a strong 1-energy attack with a self-damage cost, and Blood for Blood frequently becomes a 0-cost card during combat due to accumulated damage taken.
Bloodletting and Offering fit naturally in this shell. Feed raises your maximum HP, expanding your resource pool. Reaper provides healing recovery when your Strength is high enough to make its damage substantial.
Bloodletting Strength engine
Recommended Relics:
- Self-Forming Clay stacks Block multiple times, softening the damage you take
- Blue Candle turns curse-triggered effects into positives within this deck
tip
The Pain curse, which normally deals 1 HP to the player when playing other cards, actually becomes a useful Strength-generating trigger in the Bloodletting Build. Similarly, the Jax encounter card does almost everything this archetype wants.How Do You Choose the Right Ironclad Build?
The honest answer is that you follow the cards the game offers you. Here is a quick reference for deciding which direction to commit:
The Strength Build is the safest starting point. The Exhaust Build has the highest ceiling once its engine is assembled. The Block Build is forgiving against heavy-hitting enemies. The Bloodletting Build is high-risk, high-reward and best attempted once you understand the character's HP margins.
Choosing your build path
General Ironclad Tips
- Upgrade Limit Break as a priority in Strength-focused runs. Removing the Exhaust makes it repeatable and enables exponential scaling.
- Reaper is one of the best healing tools in the game when Strength is high. Do not overlook it in longer fights.
- An upgraded Double Tap in the late game can produce enormous burst damage by duplicating your strongest attack.
- In Exhaust decks, having a few Attack cards alongside your Skills ensures you have damage output even before the full combo is assembled.
- Artifact status removes debuff applications, which means it cancels the temporary downside on Flex, effectively making it a clean Strength buff with no strings attached.