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