25 Pro Tips for Slay the Spire 2 Advanced Strategies

Last updated: June 2, 2026 | Reading time: 12 min | by STS2 Guide Team

You know the basics. Youve beaten Ascension 10. Now you want to reach the top. These 25 tips will take your game to the next level.

Deck Building Tips

1. The "28-Card Rule"

Your deck should have exactly 28 cards by the Act 2 boss. Above 35 cards, consistency drops below 60%.

2. Skill/Attack/Power Ratio

Optimal ratio: 60% Skills, 30% Attacks, 10% Powers. Skills = survival. Attacks = damage. Powers = scaling.

3. Remove Strikes Before Upgrading

A Strike in your deck is a 5% consistency penalty. Removing a Strike is better than upgrading any card.

4. Dont Add "Okay" Cards

If a card is merely "okay", skip it. Your deck is a precision instrument.

Combat Tips

5. Count Enemy Intent Every Turn

If the enemy deals 25 next turn, block 25. If the enemy buffs, use that turn to set up your engine.

6. Block Is Damage Prevention, Not Reduction

20 Block prevents 20 attack damage. It does NOT prevent poison, burn, or buff/debuff effects.

7. Setup Turns Are Free Turns

When the enemy buffs, thats a free turn for you. Set up your engine. Dont waste it attacking for 8 damage.

8. AOE Is Mandatory by Act 2

Act 2 and Act 3 have lots of multi-enemy fights. Have at least 2 AOE cards by Act 2 boss.

Pathing & Map Tips

9. The "2-Elite Rule"

Path for at least 2 elites per Act. Below 2 = underpowered. Above 3 = high risk of death.

10. Campfire Priority: Upgrade > Rest > Remove

At low HP (<50%)? Rest. Otherwise, always upgrade. Removing cards at campfires is a trap use shops for removal.

Character-Specific Tips

Ironclad Tips

• 11. Burning Blood heals 6 HP after combat. Dont waste it.
• 12. Corruption + Feel No Pain = infinite block. The strongest combo.

Silent Tips

• 13. Well-Laid Plans is the best card control in the game. Scry 3 every turn.
• 14. Wraith Form gives 3 turns of intangible. Use those turns to set up your kill.

Defect Tips

• 15. Glacier + 3 Frost Orbs = 24 Block/turn passively.
• 16. Orb order matters. Oldest Orb triggers first. Channel Lightning first if you have Capacitor.

Watcher Tips

• 17. Scrawl + Talk to the Hand = 20x damage potential. One-turn kill enabled.
• 18. Stance dancing (Calm Wrath) is the core Watcher mechanic. Master it.

Advanced Meta Tips

19. Watch Your Opponents HP Bar

If the boss is about to transition (<50% HP), dont use your big damage yet. Wait for the phase transition.

20. Consumable Management

Dont hoard potions "just in case." Use them. A potion unused is a potion wasted.

21. Know When to Reset

If your run is going badly, reset early. Dont waste 20 minutes on a 5% win chance run.

22. The "One Big Block" vs. "Small Block Every Turn" Debate

New players block 40 in 1 turn, then take 30 next turn. Old players block 15 every turn. Consistency > spike.

23. Have Fun

Slay the Spire 2 is a hard game. You will lose. A lot. That's OK. The joy is in the "just one more run" feeling.