List of Achievements Achieved by Moving Friendly Ghosts
Friendly Ghost is a very special achievement in the game, which requires completing all haunted levels without slapping any ghosts.
Achievement gameplay
Excluding the teaching level, there are three ghost levels in total, which will be marked below.
There is no need to "slap" (X key) to attack the ghost. Whether the character is caught by the ghost does not affect the unlocking of this achievement.