Here is the full list of all 27 Solitairica achievements.
Break your heart by taking fatal damage on the last card
Collect 50+ coins from a single card
Use Cosmic Inversion to go from 1 health to full
Defeat Emperor Stuck with every deck
Buy every item in the game
Buy every spell in the game
Fill the bar for all energy types.
Unlock the Warrior deck
Encounter all enemy traits
Defeat the enemy without using any spells
Match every numeral in a single streak
Defeat Emperor Stuck
Buy all 3 potions in a single journey
Enter Castle Stuck
Battle all 18 enemy types
Unlock a second deck
Visit the Cliffs of Mythos
Cause the enemy to sacrifice the last card
Visit Tangleslime Swamp
Visit the Ruinous Bog
Upgrade your first card in any deck
Start a new journey after your heart breaks the first time
Have your heart broken
Collect a wildstone from a card
Match 10 cards in a row
Visit the Blandlands
Visit the Meadows of Madness