Slay the Spire Hidden Achievements

Hidden Achievements

A guide consisting of tips and strategies to reach 100% in Slay the Spire

The Boss

  • Defeated the Slime Boss

The Guardian

  • Defeated the Guardian

The Ghost

  • Defeated Hexaghost

The Automaton

  • Defeated the Bronze Automaton

The Champion

  • Defeated the Champ

The Collector

  • Defeated the Collector

The Crow

  • Defeated the Awakened One

The Time Eater

  • Defeated the Time Eater

The Shapes

  • Defeated Donu & Deca


  • Complete the Ending with the Ironclad.

To obtain the 3 class + achievements you will first need to unlock Act 4. You accomplish this by completing a run with each of the 3 classes (I recommend doing this on Ascension 0). Once Act 4 has been unlocked, you will need to collect all 3 keys during your following run.

You get the Ruby key from any campfire:

The Sapphire key is obtained from a chest:

The Emerald key is obtained from an Elite (look for an animated elite on the map)

Succesfully completing Act 4 with the Ironclad will unlock the Ruby+ achievement.

Emerald +

  • Complete the Ending with the Silent.

Sapphire +

  • Complete the Ending with the Defect.

The Ending?

  • Complete the Ending with the Ironclad, Silent, and Defect.

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