Here is the full list of all 15 Tricks and Treats achievements.
Complete all levels in the First Episode
Make a 7-pieces match 10 times
Make a 5-pieces match 10 times
Make a 6-pieces match 10 times
Make a 4-pieces match 10 times
Complete the first tutorial level
Complete all levels in the Second Episode
Complete all levels in the Third Episode
Complete all levels in the Fourth Episode
Complete all levels in the First Episode with 3 stars
Complete all levels in the Second Episode with 3 stars
Complete all levels in the Third Episode with 3 stars
Complete all levels in the Fourth Episode with 3 stars
Complete all levels with 3 stars
Buy all upgrades