Slay the Spire 2 Ironclad Guide: Builds, Pivots and the July 2026 Meta

The Ironclad plan, in 100 words

Ironclad wins by converting Act 1 aggression into relics, then pivoting into a scaling engine before the front-loaded damage stops being enough. In the July 2026 Early Access build that pivot has two clear destinations: exhaust/control, which Mega Crit has deliberately buffed, and strength beatdown, which came roaring back when beta patch v0.109.0 (17 July 2026) raised Demon Form’s strength gain from 2 to 3 (3 to 4 upgraded). The old third option — paying HP for energy until something breaks — still works, but Bloodletting moved from Common to Uncommon, so you can no longer plan around seeing it.

First, the state of the game

Slay the Spire 2 is still in Steam Early Access (since 5 March 2026) on Windows, macOS and Linux, and it is Steam Deck Verified. There are no console versions. If you read an older guide listing PS5, Xbox and Switch, that guide is wrong — including, until this update, ours.

Early Access has been anything but quiet. The relevant patch timeline for Ironclad players:

• Major Update 1 — the first big Ironclad pass. Explicit goal: better survivability and exhaust synergies. Added Not Yet, reworked Dominate, Expect a Fight, Spite and Stoke, and removed Grapple from the pool entirely. Shop relic prices dropped 25 gold across the board.
• v0.106.x (22 May 2026) — targeted tuning. Drum of Battle‘s energy-on-exhaust now benefits from Replay and duplication effects, Howl from Beyond moved its trigger to end of turn, Entrench gains extra block from enchantments, Unrelenting went from 12(18) to 14(20) damage.
• Major Update 2 / v0.107.1 (19 June 2026) — Aeonglass added, Doormaker removed, the RNG rewritten to xoshiro256++, three new Neow relics.
• v0.108.0 beta (2 July 2026) — 15 multiplayer cards, three of them Ironclad-only.
• v0.109.0 beta (17 July 2026) — the current beta as of writing. Demon Form buffed, Huge Rock damage up, Bloodletting rarity nerfed, Expect a Fight loosened, more Neow relics.

Running through the balance philosophy across all of them is one sentence Mega Crit keeps repeating: the aim is to make infinites harder to achieve, not to kill the synergies that lead to them. That is why exhaust keeps getting buffed while the specific loops that trivialised fights keep getting fenced off.

Core identity: Burning Blood, exhaust, and HP as currency

Burning Blood

Heal 6 HP at the end of each combat. Unchanged through every 2026 patch, and still the reason Ironclad gets to play greedier than anyone else:

• Trading 5–10 HP to kill an enemy a turn earlier is usually correct.
• Over-blocking is a misplay. Your HP is a resource to spend, not a score to protect.
• HP-cost cards are worth more in your deck than in anyone else’s.

If you are ending Act 1 fights at full health, you are playing too safely and you are leaving elites — and therefore relics — on the table. For the wider healing picture, we cover how to heal and restore health efficiently separately.

Exhaust

Exhaust removes a card from the combat entirely. Treat it as deck sculpting, not as a downside:

• Exhausting Strikes, Defends and statuses raises the density of your good cards every turn.
• Exhaust payoff powers convert that thinning into draw and block.
• Self-exhausting cards are strong early and never clog late.

Major Update 1 pushed hard in this direction on purpose, and the mid-2026 community read on high-Ascension consistency reflects it: exhaust-value Ironclad is the deck that shows up most often when infinites are off the table.

New in Early Access: Not Yet

Not Yet — Rare Skill, 2 energy: Heal 10 (13) HP. Exhaust. This is the card that changed Ironclad’s risk maths. Non-campfire healing that also feeds your exhaust engine means you can take an elite line you would previously have skipped, and it makes low-HP Act 2 recoveries survivable without burning a rest.

Act 1: farm relics, take the damage

Draft priorities

For the first five or six fights, bias heavily toward front-loaded damage. Attack plus draw, Vulnerable application, and any big-damage rare. In Act 1 it is almost never wrong to take your first two or three strong attacks. Get picky only once your deck reliably deletes hallway fights in two or three turns.

Pathing

• Two elites minimum, three if you have picked up a strong attack and a damage amplifier, and your relics have not saddled you with a tempo problem.
• Use ? rooms to fish for removals and upgrades, and to reach shops once you are past 150 gold. The 25-gold shop relic discount from Major Update 1 makes shop visits meaningfully better than they were at launch.
• Hit a campfire before your second elite and upgrade your best attack, or your first scaling piece if you already have one.

Neow: the opening meta changed more than the cards did

Major Update 2 and v0.109.0 added new Neow relics, and they matter more to your run than any single Act 1 card pick. The two worth learning by name:

• Dowsing Rod — grants a 0-cost quest card, Dowsing. After you enter five event rooms it transforms into Abundance, a 1-cost Skill with Exhaust that lets you pick one of three Power cards, add it to hand and play it free that turn (upgraded versions offer upgraded powers). For Ironclad this is close to ideal: it exhausts, which feeds your engine, and it hands you guaranteed access to a scaling power instead of praying for one. If you are comfortable routing through events, it is the strongest generic Neow start.
• Neow’s Sacrifice — hands you Ambergris, a potion that restores 50% max HP and grants an extra turn, plus a Guilt curse that disappears after five battles. High risk, high tempo. Ironclad’s HP pool and Burning Blood absorb the curse better than most, so it is a genuine option if you plan to rush elites.

What has not changed is the consensus on trading Burning Blood away: don’t, unless the compensation is enormous. Burning Blood plus a good Neow pick beats most flashy starting trades.

The pivot: when to stop drafting attacks

Most failed Ironclad runs die in Act 2 with a deck full of great Act 1 attacks and no engine. Start shifting when:

• Fights regularly run past four or five turns.
• You are taking 15+ damage in hallway fights despite clean play.
• You already have four to six non-starter attacks and the next one adds nothing.
• You are offered a cornerstone piece for one of the archetypes below.

The rule: once you can three-turn hallway fights, every pick should be an engine piece or a quality upgrade, not another attack.

The four archetypes worth building in July 2026

1. Exhaust engine — the consistency pick

Concept: thin the deck with targeted exhaust while payoff powers convert each exhaust into draw and block.

Why it is strong right now: it is the archetype Mega Crit has explicitly buffed. Major Update 1 reworked Expect a Fight, Spite, Stoke and Dominate around fair exhaust engines rather than loops, and v0.106.x made Drum of Battle‘s energy-on-exhaust work with Replay and duplication effects. Add Not Yet as a sustain outlet that also triggers your exhaust payoffs and this becomes the deck that survives high Ascension.

Pivot into it when: you find an exhaust payoff power early, or you already hold two decent exhaust cards and get offered targeted exhaust.

2. Strength beatdown — back in the top tier

Concept: ramp strength, then end combats in two or three enormous swings.

Why it is strong right now: v0.109.0 pushed Demon Form from 2 to 3 strength per turn, and 3 to 4 upgraded. That is a large number in a game where Act 3 and 4 bosses are long fights. The same patch also raised the damage on the Huge Rock created by Primal Might, which gives the archetype a burst finisher to pair with the ramp. The catch is unchanged: you have to survive the ramp turns, so this build needs a real block package or it folds to anything that hits hard on turns two through four.

Pivot into it when: you land Demon Form with energy or draw support, or Abundance from Dowsing Rod offers it to you outright.

3. Block conversion

Concept: stack block that persists, then convert it into damage.

Entrench gaining extra block from enchantments (v0.106.x) makes block scaling less linear than it was at launch, which is good for this line’s ceiling and bad for its predictability. It remains rare-dependent — recognise it when the pieces arrive, don’t force it. Be honest about your damage plan before committing: a wall with no win condition just loses slowly.

4. HP-for-energy tempo — still lethal, no longer reliable

Concept: pay HP for energy, dump huge hands, let Burning Blood clean up.

v0.109.0 moved Bloodletting from Common to Uncommon, which is a consistency nerf rather than a power nerf — when you see it, it is as good as ever, you just see it far less. In partial compensation, Expect a Fight no longer stops you gaining additional energy that turn, restoring some big-turn potential. Treat this as a line you fall into when the cards show up, not a plan you draft toward.

Removals, upgrades and act-by-act pathing

What to cut

• Remove Strikes first, once you have four or five better attacks or a working exhaust engine.
• Keep Defends until your block package is genuinely established.
• With the shop relic discount in effect, budget for a removal and a relic more often than you did at launch.

Upgrades that outperform their appearance

• Targeted exhaust. Turning random exhaust into chosen exhaust is the single biggest quality jump in the class.
• Draw attached to damage. In a lean deck, draw is pseudo-energy.
• Demon Form. With the v0.109.0 numbers, the upgraded version is a different card. Upgrade it over almost anything else.
• Early Vulnerable tools. Cheaper or longer-lasting Vulnerable pays into every attack-based line.

Pathing summary

Act 1 — be greedy. Two to three elites, draft damage and Vulnerable, upgrade your best attack or first scaling card.

Act 2 — respect the spike. One or two elites unless the deck is clearly online. Stop taking filler attacks. Use shops for removals and engine pieces.

Act 3 — play to your build. Route around elites that counter you, look for one last relic, and skip fights that do not improve the deck.

Mistakes that end Ironclad runs

• Too many attacks. Half your deck being attacks by mid-Act 2 means you have neither defence nor scaling.
• Fear of exhaust. Passing on targeted exhaust because “I don’t want to lose cards” is how decks stay bloated.
• Chasing infinites. Three separate 2026 patches have narrowed them. Build the fair version of the engine instead; it is what the balance team is actively supporting.
• Hoarding HP. Holding back HP-cost cards to stay healthy usually costs more HP across the fight than it saves.
• Reading a pre-patch guide. Demon Form, Bloodletting and Grapple all changed in 2026. Grapple is not in the game any more.

FAQ

Is Ironclad still the best starter character?

It is still the most forgiving. Burning Blood plus a large HP pool means your mistakes cost resources rather than runs, and after the Demon Form buff its ceiling is competitive with anything. See how to unlock the rest of the roster when you want a change.

What is the strongest Ironclad build right now?

Exhaust/control is the most consistent at high Ascension; strength beatdown has the higher ceiling since v0.109.0. Which one you end up in should be decided by what Act 1 hands you, not by what you decided in the lobby.

Does any of this apply to co-op?

Partly. v0.108.0 added three Ironclad-only multiplayer cards and buffed the tank-support role — the caster now takes +50% damage instead of +100% while allies take 50% less. That leans into Ironclad as the party’s front line. Our co-op guide covers the mode’s rules in full.

Should I play on the beta branch?

If you want the current numbers, yes — v0.109.0 is where the Demon Form buff lives. If you play co-op, the whole group has to opt in together.

Ten rules to take into your next run

• Spend HP to end fights faster. That is what Burning Blood is for.
• Two to three elites in Act 1; treat them as your relic farm.
• Take Dowsing Rod at Neow if you are happy routing through event rooms.
• Rarely trade Burning Blood away.
• Commit to a scaling direction by the end of Act 1.
• Stop drafting attacks once you can three-turn hallway fights.
• Upgrade Demon Form and targeted exhaust ahead of marginal damage upgrades.
• Remove Strikes first.
• Build the fair exhaust engine, not the infinite.
• Check the patch notes before you trust any build list, including this one.

Treat Act 1 as the relic farm, Act 2 as the pivot, and Acts 3 and 4 as execution, and Ironclad stops being the basic starter and becomes the most reliable character in the game. More on the class and the game itself over on the Slay the Spire 2 hub.