Slay the Spire 2 Best Builds
Looking for the strongest builds in Slay the Spire 2? This guide compares the best builds across all five characters, helping you choose the right strategy for your next run. Each build includes core cards, key relics, and difficulty ratings.
Best Builds Quick Comparison
| Character | Best Build | Power Level | Difficulty | Best For |
|---|---|---|---|---|
| Silent | Sly Hybrid | S-Tier | Medium | All Ascension levels |
| Necrobinder | Graveyard Scaling | S-Tier | Hard | Long fights, bosses |
| Defect | Lightning Orb Focus | A-Tier | Medium | AoE damage |
| Regent | Doom Combo | A-Tier | Hard | High-risk, high-reward |
| Ironclad | Strength Scaling | A-Tier | Easy | Beginners, consistent wins |
Silent: Sly Hybrid Build
S-TIERThe strongest build in Slay the Spire 2. Sly allows you to play high-cost cards for free by discarding them, creating explosive turns with minimal energy investment. This build combines Sly with Poison or Shiv synergies for maximum flexibility.
Core Cards
- ✓Acrobatics: Draw 3, discard 1. Perfect Sly enabler.
- ✓Hand Trick: Apply Sly to any card. Opens hybrid possibilities.
- ✓Reflex + Tactician: Zero-cost when discarded. Infinite cycling.
- ✓Abrasive: Block + AoE damage on discard.
- ✓Footwork: Permanent Dexterity for survivability.
Key Relics
- Gambling Chip: Discard synergy
- Tough Bandages: Block on discard
- Tingsha: Damage on discard
- Runic Pyramid: Never discard at turn end
Strengths
- • Extremely flexible and consistent
- • Works at all Ascension levels
- • Strong against all enemy types
- • Easy to pivot mid-run
Why S-Tier: Sly is the most broken mechanic in STS2. This build lets you play expensive cards for free while cycling through your deck multiple times per turn. Nearly unbeatable when fully assembled.
Necrobinder: Graveyard Scaling Build
S-TIERThe Necrobinder's graveyard mechanic scales infinitely. Fill your graveyard with Osty (bone tokens), then unleash devastating attacks that grow stronger with each card played. Dominates long fights and boss encounters.
Core Cards
- ✓Bone Pile: Generate Osty for graveyard fuel.
- ✓Reap: Damage scales with graveyard size.
- ✓Exhume: Retrieve powerful cards from graveyard.
- ✓Soul Harvest: Permanent scaling power.
Key Relics
- Dead Branch: Generate cards on Exhaust
- Necronomicon: Double-cast attacks
- Mummified Hand: Reduce costs
Weaknesses
- • Slow in Act 1
- • Requires setup time
- • Vulnerable to early aggression
Why S-Tier: Infinite scaling potential. Once your graveyard reaches 20+ cards, you become unstoppable. Dominates Act 3 and Act 4 bosses.
Defect: Lightning Orb Focus Build
A-TIERStack Focus to amplify Lightning Orb damage, then channel multiple orbs for passive AoE damage each turn. Excellent against multi-enemy encounters and scales well into late game.
Core Cards
- ✓Defragment: +1 Focus per turn. Essential scaling.
- ✓Ball Lightning: Channel Lightning Orbs.
- ✓Electrodynamics: Lightning hits all enemies.
- ✓Capacitor: +2 Orb slots for more damage.
Key Relics
- Inserter: Extra orb slot
- Gold-Plated Cables: +3 Focus
- Symbiotic Virus: Dark Orb synergy
Best Against
- • Multi-enemy encounters
- • Act 2 elites
- • Enemies with low HP
Why A-Tier: Consistent and powerful, but lacks the explosive potential of S-tier builds. Struggles against single-target bosses with high HP.
Regent: Doom Combo Build
A-TIERApply Doom to yourself for massive damage buffs, then use healing and block to survive. High-risk, high-reward playstyle that can one-shot bosses with proper setup.
Core Cards
- ✓Reckless Charge: Apply Doom, gain Strength.
- ✓Last Stand: Massive damage at low HP.
- ✓Reaper: Heal based on damage dealt.
- ✓Offering: Lose HP, gain energy and card draw.
Key Relics
- Magic Flower: Heal at low HP
- Runic Cube: Card draw on HP loss
- Self-Forming Clay: Block at turn end
Difficulty
Requires precise HP management and timing. Not recommended for beginners.
Why A-Tier: Incredible damage potential, but risky. One mistake can end your run. Requires experience to pilot effectively.
Ironclad: Strength Scaling Build
A-TIERThe most straightforward build in STS2. Stack Strength, play attacks, win. Perfect for beginners and consistent at all Ascension levels.
Core Cards
- ✓Demon Form: +2 Strength every turn. Win condition.
- ✓Limit Break: Double your Strength.
- ✓Heavy Blade: Damage scales with Strength.
- ✓Inflame: +2 Strength immediately.
Key Relics
- Vajra: Start with +1 Strength
- Girya: Permanent Strength gains
- Brimstone: Strength at turn start
Why Beginner-Friendly
Simple gameplan: get Strength, play attacks. Hard to mess up.
Why A-Tier: Reliable and consistent, but lacks the flexibility of Silent's Sly or Necrobinder's scaling. Still a top-tier choice for climbing Ascension.
Which Build Should You Play?
For Beginners
Start with Ironclad Strength Scaling. Simple, forgiving, and teaches core mechanics.
Alternative: Defect Lightning Orbs (more complex but still straightforward)
For High Ascension
Play Silent Sly Hybrid or Necrobinder Graveyard. Both scale infinitely and handle difficult encounters.
These builds have the highest win rates at A20
For Fun
Try Regent Doom Combo. High-risk gameplay with explosive damage potential.
Warning: Expect to die a lot while learning
For Co-op
Silent Sly + Ironclad Strength is the strongest duo. Sly provides utility, Ironclad provides damage.
Check our Co-op Synergy Builder