Complete the following tasks to unlock the corresponding achievement.

Achievement	How to unlock
ASTRAL EXPLORER	Find lost spirit using astral sight.
ASTRAL NINJA	Find second hiding spirit.
EVIL GURU	Do all possible evil things in the game.
GHOST COLLECTOR	Find third lost spirit using astral sight.
HOLY GURU	Pass through all the game without killing anyone.
MERCIFUL INVADER	Pass through guard at the forest location without killing him.