Here is the full list of all 30 House of Hell achievements.
Slip in a pool of blood
Find all the artwork in House of Hell
Find the ultimate ending in Medium mode
Find the ultimate ending in Free Read mode
Collect 100 FEAR points!
Check out all the paintings on display
Get maximum points in the torture word game
Collect 70 FEAR points
Escape from an invisible entity
Find all art pieces for Dan Maxwell's alternative cover
Deal with a mischevious poltergeist
Fall under the spell of a vampire
Find all the potential weapons in the house
Find all the keys within the house
Have faith in a ghost
Collect 30 FEAR points
Meet a ghoulish creature
Find yourself stuck in two story loops of doom
Kill five very large dogs
Find your way into a sacrificial ceremony
Find the ultimate ending in Hardcore mode
Escape the House of Hell
Collect 10 FEAR points
Find the secret room
Get a Hunchback drunk
Use a pot-plant in a clever way
Collect your first FEAR point
Meet all the zombies within the house
Enter all the locations in the house
Sample all of the wine in the house