Here is the full list of all 19 Shadowhand: RPG Card Game achievements.
Beat the game in Very Hard mode
Make a combo of 40 or higher
Beat the game in Normal mode
Beat the game in Relaxed mode
Fill all available spare card/joker slots
Own all ability cards
Complete Chapter 20
Get 8 perfect hands in a chapter
Complete Chapter 15
Get a 5x multiplier
Complete Chapter 10
Win 2000 gold in a single chapter
Earn 20 stars in a chapter
Save up 3000 gold without spending it
Win 1200 gold in a single chapter
Make a combo of 20 or higher
Use three ability cards in a single hand
Complete Chapter 5
Make your first combo