Here is the full list of all 30 True Fear: Forsaken Souls achievements.
Finish a hidden object scene without using any Hints.
Finish 5 hidden object scenes without using any Hints.
Finish all hidden object scenes without using any Hints.
Solve a puzzle without using Skip.
Solve 5 puzzles without using Skip.
Solve all puzzles without using Skip.
Finish one Act without using the Hint.
Finish two Acts without using the Hint.
Finish all Acts without using Hints.
Finish the Bonus Chapter without using Skip.
Play non-stop for an hour.
Play non-stop for 3 hours.
Finish the game without stopping.
Finish the Bonus Chapter without stopping.
Find Katie.
Find Heather.
Discover Mother's secret behind the carved door.
Discover what's underneath the house.
Find Jack.
Find one collectible figurine.
Find half of the collectible figurines.
Find all collectible figurines.
Find a Fact.
Find every Fact in one Act.
Find every Fact in the main game.
Find all the Facts in the Bonus Chapter.
Finish the main game.
Finish the main game on Expert difficulty.
Finish Bonus Chapter.
Earn all Achievements.