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Guardian

Act: ACT 1
Guardian

Description

The Guardian is one of the three possible Act 1 bosses in Slay the Spire, a towering mechanical construct designed to defend the Spire’s secrets. Known for its deadly multi-hit attacks and powerful defensive stance, the Guardian alternates between offense and defense, forcing players to carefully manage their timing and resources. Its signature mechanic is the Mode Shift, which activates after taking a set amount of damage, causing the Guardian to curl into a defensive ball that reduces incoming damage and unleashes counterattacks. With the ability to punish reckless play and overwhelm unprepared decks, the Guardian is a true test of block management, burst damage, and deck consistency early in the game. Defeating it rewards players with a powerful Boss Relic and progression into Act 2.

HP: 240 / 250 (9+)

Abilities

Charging Up
Charging Up
•
Gains 9 Block.
Fierce Bash
Fierce Bash
•
Deals 32 damage.
•
Deals 36 (4+) damage.
Vent Steam
Vent Steam
•
Inflicts 2 Weak and 2 Vulnerable (in that order).
Whirlwind
Whirlwind
•
Deals 5 x 4 damage.
Defensive Mode
Defensive Mode
•
Gain 3 Sharp Hide.
•
Gain 4 (19+) Sharp Hide.
Roll Attack
Roll Attack
•
Deals 9 damage.
•
Deals 10 (4+) damage.
Twin Slam
Twin Slam
•
Deals 8 x 2 damage, removes Sharp Hide and shifts back to Offensive mode.

Tips

  • Manage your cards so you will have lots of damage during Offensive Mode and some Block during Defensive Mode so you don't get damaged as much if you want to attack while it has Thorns.
  • Poison will proc mode shift and avoid thorns, and as such is very effective against this boss.

In Party With

None

Trivia

The Guardian in Slay the Spire gets its name as a reference to the Guardian from the video game Portal. The Guardian is a towering mechanical construct designed to defend the Spire’s secrets, similar to the Guardian from the video game Portal.