Here is the full list of all 11 The Hat Man: Shadow Ward achievements.
Run into 50 shadow people
Kill 4 shadow people with the flashlight in the bedroom
Be in the same room as the Hat Man 10 times
Listen to the radio for 30 seconds
Save your daughter and escape
Finish the game in under an hour
Finish the game in under 45 minutes
Finish the game in under 30 minutes
Finish the game without loading a saved game
Finish the game without loading a saved game and without saving along the way
Listen to your daughter read all the pages of her journal in a game