StS2 / Guides / Bosses / Knowledge Demon
Knowledge Demon
Boss Guide Act 2 — Hive

Knowledge Demon

Ponder (heals 30 HP + gains Strength every cycle). Knowledge Overwhelming (24-27 multi-hit dmg).

HP 379
A8+ 399

Mechanics

Curse ChoicesSelf-HealStrength Scaling

Danger Turns

Ponder (heals 30 HP + gains Strength every cycle). Knowledge Overwhelming (24-27 multi-hit dmg).

Attack Patterns

01 Fixed 4-Move Cycle (Curse → Slap → Overwhelm → Ponder)
T1
Curse of Knowledge

Choose one of two curses to receive (see curse sets below).

T2
Slap

17 dmg (18 A9+).

T3
Knowledge Overwhelming

8×3 dmg (9×3 A9+) = 24-27 total.

T4
Ponder

11 dmg (13 A9+), heals 30 HP, gains 2 Strength (3 A9+).

02 Curse Choices (each offered once)
TSet 1
Disintegration (6 dmg/turn)

OR Mind Rot (draw 1 fewer card/turn).

TSet 2
Disintegration (7 dmg/turn)

OR Sloth (max 3 cards/turn).

TSet 3
Disintegration (8 dmg/turn)

OR Waste Away (1 less Energy/turn).

Strategy

1

379 HP + heals 30 every 4 turns — you MUST play aggressively or he outheals you.

2

Ponder is the key move to race against: 30 HP heal + Strength stacking every cycle.

3

Choose curses carefully: Disintegration (flat damage) is better if your build is fast.

4

Mind Rot (-1 draw) hurts card-draw-heavy decks. Sloth (max 3 cards) hurts combo decks.

5

Waste Away (-1 Energy) is often the worst curse — avoid it unless your build is very cheap.

6

After all 3 curse sets, Curse of Knowledge is skipped — the 3-move cycle speeds up.

7

Block hard on Knowledge Overwhelming turns (24-27 total multi-hit damage).

Best Counters

High sustained damage to outpace healingPoison/scaling ignores BlockArtifact or cleanse for cursesAggressive play to end before 3rd curse set
GGEZ.GG · Slay the Spire 2 · Early Access · March 2026
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