Here is the full list of all 25 CURSE achievements.
Discovered the second ending.
Read the Ledger.
Beat the game on Easy.
Defeated Edgar Atherton.
'Read' all of the notes in the game.
Read’ the metal table.
Answered the Cellar phone.
‘Read’ the Aeternam Dagger.
'Read' Eve Atherton's portrait.
'Read' Edgar Atherton's portrait.
Looked in the toy chest.
Banished Mary Chaucer.
Say 'Bloody Mary' 3 times.
Investigated the third library bookshelf.
Touched the hallway mirror.
Beat the game on Normal.
Beat the game on Hard.
Beat the game on Nightmare
Do not get killed by a ghost on Easy difficulty.
Do not get caught by a ghost on the Normal difficulty.
Do not get caught by a ghost on the Hard difficulty.
Do not get caught by a ghost on the Nightmare difficulty.
Look out the hallway window.
Saw Tasha’s ghost in the Kitchen.
'Read' the Book of Dominion