Here is the full list of all 18 Infliction achievements.
Finish the game
Exercise yourself once possessed
Trap Crave behind the roller door
Find hell inside the elevator
Find the person trapped in the vending machine
Solve the hallway riddle in the first two tries
Discover the two memories during the hallway riddle
Enter the mirror world
Find all the memories in 1999
Watch the cooking show
Examine the hole in the basement wall
Take a photo in the police line-up room
Find the crucifix hanging in the tree
Kill the ghost with shock therapy
Watch the TV show once you’ve set the ghost free
Take 4 photos capturing the ghost hiding
Kill the ghost during the 1980’s
Find every memory