Every character in Slay the Spire 2 has a fantasy deck — the one the card text practically begs you to build. For Ironclad, it is Barricade: a 3-energy power that stops your block from evaporating at the start of your turn. Keep every point of block you play, forever, for the rest of the fight. On its own that is just defense. Combined with Body Slam — an attack that deals damage equal to your block — defense becomes the win condition. This guide is the full manual: the core loop, the block cards that carry it, the math that kills bosses, and the drafting discipline that keeps a Barricade deck from becoming a slow way to die.
The core loop: bank block, then spend it twice
The normal rules of combat say block resets every turn, so blocking is always a temporary purchase. Barricade breaks that rule — block you play stays on your character. From turn two onward you are accumulating a number that never goes down unless something specifically strips it.
Body Slam (Common, 1 energy) deals damage equal to your current block. Under normal rules it is a modest card. Under Barricade it is the finisher: bank 25 block one turn, slam for 25 the next, bank 30 more, slam for 55. Each cycle the slam grows, because the block never leaves.
Unmovable (Rare, 2 energy) doubles the first block you gain from a card each turn — a 12-block card becomes 24. It stacks perfectly with the strategy because your biggest block card each turn is exactly the one you want doubled.
Juggernaut (Rare, 2 energy) deals 5 damage to a random enemy whenever you gain block — including the passive accumulation under Barricade. It turns every defensive turn into a partial attack, which covers the deck's one weakness: turns where you only defend.
The block cards that carry the deck
Impervious (Rare, 2 energy, 30 block) is the single biggest block in the game and the card you want doubled by Unmovable — 60 block in one play ends most enemy turn plans. Shrug It Off (Common, 1 energy, 8 block, draw 1) is the everyday glue: block and card advantage on one card.
Blood Wall (Common, 2 energy) trades 2 HP for 16 block — efficient, and Ironclad is the one character who can afford to pay health for defense. Flame Barrier (Uncommon, 2 energy) gains 12 block and deals 4 damage back every time you are attacked that turn — a mini-Juggernaut for the early game before your engine starts.
True Grit (Common, 1 energy, 7 block, exhausts a random card) blocks while it cleans your deck mid-fight. Iron Wave (Common, 1 energy, 5 block, 5 damage) covers the turns when you need a little of both. Second Wind (Uncommon, 1 energy) exhausts the non-Attack cards in your hand for 5 block each — on a hand of five skills it blocks 25, and it doubles as the answer to curses like Ascender's Bane at high Ascension.
Feel No Pain (Uncommon, 1-energy Power) gains 3 block whenever any card is exhausted — with True Grit and Second Wind in the same deck, your cleanup plays start generating their own block, and Stone Armor (Uncommon, 4 Plating) adds a small floor of passive defense every turn.
The math that kills bosses
Here is what a Barricade turn cycle looks like in practice. Turn one: play your block cards, bank 20-30. Turn two: bank another 15-20 and slam for the full total — a 1-energy card hitting for 40. Turn three onward, the slam alone outdamages most dedicated attacks while you keep adding to the pile.
The scaling is quadratic-ish and that is the point: every turn you survive makes every future turn stronger. Bosses with 300-500 HP — the kind that grind strength builds into a stalemate — fall to a Barricade deck by turn 8-10 because the slam is hitting for 50, 60, 80.
Upgrade order follows the math. Body Slam first — the upgrade usually removes its energy cost or boosts its damage ratio, and it is the card you play most often. Impervious second. Shrug It Off third, because its upgrade adds block to the card you are playing every single turn.
What the deck still needs (and new players skip)
The classic Barricade failure is a deck that blocks beautifully and kills nothing. Block without Body Slam is just survival; survival does not end fights, and end them you must. Take Body Slam the moment Barricade is in the deck — two or three copies is normal, and this is one of the rare decks where you draft multiple copies of a common on purpose.
The second gap is draw. Banking block requires finding the block cards, and Battle Trance (Uncommon, 0 energy, draw 3) is the cheapest way to see your whole engine. A Barricade deck with no draw spends turn after turn holding the wrong half of itself.
Third: do not skip early damage. Hallway fights in Act 1 do not care about your long-term plan, and Twin Strike, Thunderclap (4 damage plus Vulnerable to all — Vulnerable also boosts the slam) and Iron Wave keep the early acts cheap while the engine assembles. Our beginner mistakes guide has a name for this pattern: overblocking when you could kill.
Draft order and common mistakes
The counterintuitive part: Barricade itself is a payoff, not an enabler. Taking it as your first rare with six block cards in the deck gets you a 3-energy card that doubles nothing. The correct order is block density first — Impervious, Shrug It Off, Blood Wall — then Barricade, then the Body Slams.
Once Barricade is in, stop drafting plain defense and start drafting multipliers: Unmovable, Juggernaut, Feel No Pain, a second Body Slam. And after the engine works, get ruthless about skipping — every extra mediocre block card dilutes the draws you actually need.
The energy management guide matters more here than in most decks: Barricade is 3 energy, Impervious is 2, and a turn that plays both has no room for a slam unless something is generating energy. If you find an energy blessing or cheap energy cards, take them without hesitation.
A co-op note: the tank fantasy is real
In multiplayer, Barricade Ironclad becomes the anchor the team builds around. Demonic Shield (Uncommon, 0 energy) gives another player block equal to your entire block — and under Barricade, that number is enormous. You bank 60, hand a teammate 60.
Tank (Rare, 1 energy) makes you take double damage while allies take half — suicidal in solo, heroic when a Barricade engine is behind it. Pair the deck with a damage-focused teammate and the two of you cover each other's weaknesses exactly. Our co-op guide covers the multiplayer specifics.