Here is the full list of all 20 Regency Solitaire II achievements.
Finish the Collector’s Edition story
Finish Collector’s Edition chapter 6, Hattie's Millinery
Beat the game in Normal mode.
Beat the main game in Hard mode.
Make a combo of 35 or higher.
Purchase all of the garden and costume upgrades.
Click the More Games button
Get a 5x multiplier.
Use all 6 powerups in a single hand.
Find a seashell.
Make a combo of 20 or higher.
Save up 50000 gold without spending it.
Reach chapter 6, set in Scotland
Win 6500 gold in a single chapter.
Get 10 perfect hands in a chapter.
Get a 2x multiplier.
Win 5000 gold in a single chapter.
Earn 20 stars in a chapter.
Fill up the fan with wildcards/jokers.
Make your first combo.