Here is the full list of all 22 Spooky Dwellers 2 - there are Collector's Edition achievements.
Complete 10 Match 3 levels
Complete 35 Match 3 levels
Complete all the Match 3 levels
Get your first Gold Cup
Get 5 Gold Cups
Get 25 Gold Cups
Get 60 Gold Cups
Get 90 Gold Cups
Get 150 Gold Cups
Complete all the Hidden Objects minigames
Complete all the Swap Puzzles minigames
Complete all the Coin Collector minigames
Complete all the Table of Memory minigames
Complete all the Tricky Candy minigames
Reach the standard ending
Reach the CE ending
Get a Legendary message in the Tricky Candy minigame
Activate a card to trap Mr. Pumpkin
Get the Fixed Cauldron bonus
Get the Movable Cauldron bonus
Place 20 buildings or objects in your Halloween playground
Activate the Spooky Tour for the first time