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