Read the intent before you block
Every enemy shows what it will do next turn. An attack icon with a number is the damage you are about to take; a shield icon means it is defending, not hitting you; a buff or debuff icon tells you what is coming.
Match your block to the shown number, then spend the leftover energy on damage. Blocking 15 against a 4-damage hit is the most common way to waste energy in the game.
Keep the deck small
A ten card deck draws its best card far more often than a thirty card deck. Every card reward is a choice, not a gift.
Before taking a card, ask one question: does this help the plan I already have? If the answer is no, skip it. The strongest decks are usually the ones that said no the most times.
Upgrade at campfires, rest only when forced
Above 50% HP, upgrade a key card — your main damage or block card. That upgrade pays off in every fight after. Rest is for emergencies, not comfort.
The rule of thumb: if the next fight will not kill you, upgrade. If it will, rest.
Use card removal before you buy
Shops are the most reliable place to cut weak starter cards like Strikes and Defends. Deleting one Strike makes every future draw better.
Spend your first shop gold on removal, then on cards that fit your plan. Do not burn gold on mediocre cards you will never draw.
Spend potions on the real threat
Potions are tools, not a collection. Use one in the fight that actually threatens you — a hard elite or a boss — not in an easy corridor battle.
A Block Potion that saves 30 HP in a boss fight is worth more than the same potion hoarded for a run you might not reach.
Plan the route on the map
You can see the whole floor before you move. The usual priority is shop, then unknown node, then elite — shops are a stable source of removal, unknowns give resources without a fight, and elites trade HP for run-defining relics.
Elites are worth it once your deck has one or two cards that solve real problems and your HP is above 60%. Skipping them entirely leaves you under-powered for the later acts.
Let the Ancient’s Gift set your direction
Each act opens with a three-choice Ancient’s Gift, replacing the old boss-relic boon. It is free and does not take a relic slot.
Pick the option that fixes your worst gap right now: more damage if you are short, card draw or card selection if you never see your key cards. Do not take something that only helps in act three.
Commit to one axis
Do not mash conflicting archetypes. If you picked a poison card, lean poison. If you took a bloodletter-style card, lean the exhaust loop. Clear direction beats a pile of half-themes.
Stay flexible about which exact cards fill that direction — let relics and rewards decide the details.
Learn the characters in order
Slay the Spire 2 has a clear complexity ramp: Ironclad, Silent, Defect, Regent, then Necrobinder. Each step adds one new keyword.
Start with Ironclad, learn one kit deeply, then move on. Jumping to Necrobinder first means learning Calamity, Souls, Osty and Exhaust all at once.
Watch for Pierce
Pierce is the mechanic that kills unaware players. When an enemy uses a Pierce attack, your block does nothing — the damage goes straight to HP.
The fix is to apply Weak (cuts attack by 25%) or kill the enemy before the Pierce lands. Treat any unseen enemy’s first turn as a block-first turn.
Related guides
- Slay the Spire 2 Beginner Guide — the order to learn the game in.
- Ironclad guide — the best first character and his build.
- Silent guide — poison, Shivs and the Sly discard engine.
- How co-op works in STS2 — up to four players, separate decks, one route.
- Characters overview — what each win unlocks.