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.
Die 100 times.
Collect all notes.
Defeat Gary?
Go into the belly of the Beast.
Investigate the daycare.
Investigate the apartments.
Investigate the clinic.
Finish the Unholy Trinity.
Get run over by the Airdorf truck at least once in all three chapters.
Finish Chapter I Flashlight Mode.
Finish Chapter I Lantern Mode.
Find all endings in Chapter II.
Find all Chapter II Prologue endings.
Get the top score in the Chapter II Prologue.
Finish the Chapter II Prologue.
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.
Find all endings in Chapter I.
Reach any ending of Chapter I.
Find and defeat the secret boss 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.