Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A Thousand Years Or More	Reach Chapter Six.
Art of the Woods	View the CG Gallery.
Communion	Reach Chapter Three.
In Love With A Ghost	Achieve the True Ending.
Into Another World	Begin Chapter One.
Isolation	Reach Chapter Two.
Restless One	Achieve the Sacrifice Ending.
Sound of the Woods	View the Music Gallery.
Thank You!	Get every (other) achievement!
Why Am I Here	Achieve the Freedom Ending.
Wooden Hearts	Reach Chapter Five.
Wreath	Reach Chapter Four.