Full list of all 32 FAITH: The Unholy Trinity achievements.
The base game contains 30 achievements, and there is 1 DLC pack containing 2 achievements.
Finish Marathon Mode, good endings only, without dying once.
Find all endings in Chapter III.
Collect all notes.
Defeat Gary?
Go into the belly of the Beast.
Investigate the daycare.
Investigate the apartments.
Investigate the clinic.
Get run over by the Airdorf truck at least once in all three chapters.
Finish the Unholy Trinity.
Get the top score in the Chapter II Prologue.
Find all Chapter II Prologue endings.
Die 100 times.
Finish the Chapter II Prologue.
Find all endings in Chapter II.
Survive the nightmare.
Enter the hidden sanctum.
Enter the Candy Tunnel.
Reach the basement of Snake Meadow Hill Church.
Solve the riddle of Gallup Cemetery.
Discover Father Garcia's backstory.
Finish Chapter I Lantern Mode.
Finish Chapter I Flashlight Mode.
Find and defeat the secret boss of Chapter I.
Find all endings in Chapter I.
Reach any ending of Chapter I.
Finish what you started?
Come face-to-face with Amy.
Enter the house once again.
Die for the first time.
Finished a Survival Mode run.
Unlock Survival Mode.