Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Black sun	Finish at least 10 levels with 3 stars during the 4th chapter.
Bloomstone	Complete the bloomstone.
Child of time	Finish three levels with three stars.
Cup of sorrow	Finish at least 10 levels with 3 stars during the 3th chapter.
Fire ring	Reach the 25th level.
Pumpkin master	Finish all halloween levels.
Santa's helper	Finish all Christmas levels.
Stardog	Finish 10 levels with 3 stars during the whole game.
Them bones	Finish 25 levels with 3 stars during the whole game.