Here is the full list of all 42 DreadOut achievements.
Deal with Suzzie
Solved the mistery of the crying widow
Listen to her story
Banish many Pocongs in single shot
Solved graveyard puzzle
Collected all special items
Collected all articles
Solved a puzzle
Took a picture of Pocong on a motorcycle
Took a picture of Genderuwo
Took a picture of UFOs
Travelled for a long distance
Stay scanning for ghosts
Playing DreadOut on Thursday night
Took a picture of Sundel Bolong at the school cafeteria
Added any picture to the gallery
Took a picture of the cat
Entered Limbo
Took a picture of a ghost
Trapped alone
Found an article
Took a picture of Shakira Irawati
Thank You
Defeated the school principal's ghost
Finished the game without entering Limbo in Act 1
Collected all ghost pictures
Endured all the scary moments on DreadOut so far
Solved all puzzles
Left the school
Took a picture of Betsy
Acquired the Camera
Found the secret of the mansion
Finished DreadOut
Took a picture of Gundul Pringis
Took a picture of Palasik
Reached an alternate ending
:P~
Playing DreadOut with convenience
Playing DreadOut without any clues
Dial the correct number
It's a cute way to die
Resistance is futile against the hand of fate