STS2 Act 3 Boss Guide

Act 3 Boss Basics

Act 3 bosses are the biggest wall in the game. This is the final exam for your deck, and clearing it ends the run.

Shared Strategy Points

• Deck completeness is everything: If the build is correct up to here, you can win
• Use every potion: There is no reason to save them anymore
• Know the boss's patterns: Put in reps to learn them
• For multi-phase fights: Minimize damage taken in the first phase

Deck Requirements for Winning

Must-Haves

• Damage scaling: Strength, Poison, Orbs, or other ongoing offense lift
• Enough Block: You need defense that absorbs the big boss moves
• Deck cycling: Compress the deck enough to draw key cards each turn

Nice to Have

• Debuff application: Weak and Vulnerable reduce incoming and raise outgoing damage
• Draw tools: Avoid empty hands and keep your options open
• Extra Energy: Play more cards per turn

Final Boss Approach

Preparation

• Rest Site: The final Rest Site is usually best spent healing
• Potions: Bring in three or more if you can
• Cards: If any dead cards remain, cut them at the last shop

In-Fight Decisions

• Turn 1: Playing Powers takes top priority
• Buffs and debuffs: Start your scaling early
• HP management: If another phase is coming, plan ahead
• Potions: Do not hesitate in tight spots

Post-Loss Review

If you lose, look back on these.

• Where did the deckbuilding go wrong?
• Which cards should you have picked?
• Were your map choices right?
• Did you time your potions correctly?
• Could your card-play order have been better?

Specific boss move patterns may change with game updates.