Ironclad Beginner GuideBuild Your First Winning Deck
The Ironclad looks simple on the surface: hit things, block hits, heal at campfires. But winning consistently — especially once Ascension climbs — demands you understand the why behind every card pick. This guide covers deck-size philosophy, the four main archetypes, card priorities by Act, relic evaluation, and the boss patterns that end most beginner runs.
Who Is the Ironclad?
The Ironclad is Slay the Spire 2's battle-hardened warrior. His kit revolves around three pillars: raw damage through Strength scaling, survival through block and healing, and an exhaust mechanic that rewards stripping your deck down to a lean fighting machine.
Unlike the Silent (who poisons) or the Defect (who juggles Orbs), the Ironclad gives you clear feedback on every decision. That transparency makes him the best character for learning the fundamentals of the game's core loop: build synergy, manage HP, execute a plan.
His starting relic, Burning Blood, heals 6 HP after every combat. That sounds minor, but it compounds significantly over a full run — you will arrive at bosses 20–40 HP healthier than any other character would, giving you more margin to play aggressively and skip defensive cards when needed.
Burning Blood is your safety net. Because you heal 6 HP after every fight, you can afford to take a little more damage in normal rooms to conserve resources (potions, defensive cards) for Elites and Bosses.
Deck Size: The Rule No One Explains
Most beginners treat every card reward as a shopping trip — pick up anything that looks useful. This is how you build a 40-card deck that never draws its combo and loses to the Act 3 boss.
The correct mental model is the opposite: your deck starts at its maximum acceptable size and you trim it down. Every card you add makes it harder to see your best cards. Every card you remove (via shops or events) makes the deck faster.
Skipping a card reward is always an option. If nothing fits your build, take nothing. A deck of 18 focused cards beats a deck of 30 mixed cards in every scenario.
The Ironclad's Starting Kit
You begin every run with 5 Strikes, 4 Defends, 1 Bash, and 1 Ascender's Bane (a Curse that exhausts itself). Your first goal: replace Defends with better block options and add one strong damage card before the first Elite.
The Four Main Archetypes
These are not rigid boxes — most winning runs blend two archetypes. But knowing each one's identity helps you recognize when to commit and when to pivot.
Strength Scaling
Stack Strength buffs until every Strike and Bash hits like a freight train. Limit Break doubles your current Strength — play it twice and a base-6 Strike lands for 54. The ceiling is absurd; the ramp is slow.
Exhaust Engine
Corruption makes every Skill cost 0 but Exhaust. Feel No Pain generates block on each exhaust; Dark Embrace draws a card. The result: a deck that produces block and cards from the same action, growing leaner every turn.
Barricade Block
Barricade makes block permanent between turns. Stack 100+ block over two turns and most physical enemies simply cannot kill you. Body Slam converts your block directly to damage — you don't even need attack cards.
Reaper Sustain
Reaper heals HP equal to unblocked damage dealt. In a 3-enemy room it can recover 20–30 HP in one turn. Stack Strength for bigger heals and pair with Whirlwind to hit every target simultaneously.
Act-by-Act Priorities
Act 1
Survive and find your identity- •Upgrade Bash first — Vulnerable doubles your damage output for the entire fight.
- •Add 1–2 block cards before the first Elite; skipping block is the most common beginner mistake.
- •If a card does not clearly fit your direction, skip it. A neutral card is worse than no card.
- •Gremlin Nob punishes Skill plays — minimize Skills in hand on its Intent turns.
- •Lagavulin drains Strength and Dexterity each turn — burst it down fast, do not drag out the fight.
Act 2
Lock in your archetype- •Rare cards like Barricade, Corruption, and Reaper appear here — prioritize them if they fit your direction.
- •Elites in Act 2 hit significantly harder; you need solid block generation before the first one.
- •Shops appear more often — save gold for a key card removal or a build-defining relic.
- •The Champ telegraphs every move; learn the attack pattern before spending potions.
- •Book of Stabbing deals multi-hit damage — Barricade builds need raw HP buffer against it.
Act 3
Tighten and execute- •Stop adding cards unless they are strict upgrades — your deck should be finalized by now.
- •Prioritize campfire upgrades over rest unless you are below 50% HP.
- •Save at least one offensive and one defensive potion for the Act 3 boss.
- •Awakened One is immune until you exhaust a card — if your deck has no exhaust, carry an Ethereal card.
- •Time Eater punishes playing many cards per turn — plan around its soft cap before the fight.
Relic Priority Guide
Relics are run-defining, but many players take everything offered without reading the downside. Here is how to think about each tier:
- •Sozu — No potions is often fine; an extra energy every turn is not.
- •Runic Dodecahedron — Start each combat at full energy. Extraordinary on most builds.
- •Philosopher's Stone — +1 energy is transformative. The enemy buff is manageable with good block.
- •Velvet Choker — 6 cards per turn is rarely a problem if your deck is lean.
- •Vajra — Free +1 Strength at the start of every combat. Trivially good in Strength builds.
- •Red Skull — +5 Strength when below 50% HP. High risk, high reward. Pair with Reaper.
- •Burning Blood replacement relics — Only upgrade if the new relic is clearly stronger.
- •Calipers — Retains 15 block between turns. Mandatory in Barricade builds.
- •Dead Branch — Insane in Exhaust builds. Mediocre without one.
- •Charon's Ashes — 3 damage per exhaust adds up fast. Needs exhaust density.
- •Orichalcum — +6 block if you end a turn without playing a block card. Barricade only.
- •Meat on the Bone — Heal 12 HP if below 50% HP at combat end. Good on aggressive Reaper builds.
- •Ectoplasm — No gold for the rest of the run. Shops become useless. Almost never worth it.
- •Coffee Dripper — No campfire upgrades. Strong if you have Smiths or upgrade events lined up.
- •Cursed Key — Chests give Curses. Opening chests becomes a liability.
- •Snecko Eye — Randomizes card costs. Your careful deck-building becomes a dice roll.
Boss Patterns That Kill Beginners
Each act boss has a specific pattern. Dying to them is almost always preventable once you know what to watch for.
Hexaghost (Act 1)
The Champ (Act 2)
Awakened One (Act 3)
Time Eater (Act 3)
Frequently Asked Questions
How many cards should an Ironclad deck have by Act 3?
Aim for 15–20 cards. A leaner deck cycles faster — you see your key pieces more reliably each combat. Every card you skip at a reward screen is an active decision, not a default. Dead cards dilute your draws and slow your engine.
Is upgrading Strikes worth it at a campfire?
Rarely. Strike upgrades are low priority compared to your core damage or synergy cards. The exception: very early Act 1 when you are starved for damage and a Neow bonus or event gave you a free upgrade.
Rest or Upgrade at a campfire?
Rest when you are below 50–55% HP heading into an Act boss or a tough Elite. Upgrade when you are healthy and have a card that meaningfully changes your damage ceiling. Top targets: Bash, Whirlwind, Reaper, Barricade, Limit Break.
What does Exhaust actually do and why does the Ironclad care?
Exhaust removes a card from your hand for the rest of that combat. The Ironclad has two payoffs: Feel No Pain grants block whenever anything exhausts, and Dark Embrace draws a card. A proper Exhaust build generates block and card draw from a single action.
Should I accept every relic offered?
Relics cost no gold, but some have crippling side effects — Ectoplasm disables all gold gain for the run, Philosopher's Stone buffs every enemy. Always read the full tooltip. Energy relics like Runic Dodecahedron and Coffee Dripper are almost always worth their downside.
How do I deal with Hexaghost adding Dazed cards to my deck?
Keep your deck attack-heavy going into that fight — fewer Skill plays means fewer Dazed triggers. If your build is Skill-reliant, save a Fire Potion to burn through the last phase before Dazed floods your draws.
When is Corruption a trap card?
Corruption makes all Skills cost 0 but Exhaust. Without at least one exhaust payoff (Feel No Pain, Dark Embrace), you are permanently removing defensive options from combat every time you use a Skill. Only take it when the rest of your kit actively benefits from exhaust.
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