- Young Alex costume
At the 'Push Begin' screen, press Up(2), Down(2), Left, Right, Left, Right, B to unlock the Young Alex costume. If you entered the code correctly, you will hear the sound of a page turning.

- Alternate costumes
Successfully complete the indicated task to unlock the corresponding costume:

Deputy	Watch the 'UFO' ending.
Bogeyman	Watch the 'Bogeyman' ending.
Order Soldier	Watch the 'Drowning' ending.
Orderly	Watch the 'Hospital' ending.
Trucker	Watch the 'Good' ending.

- Alternate endings
Successfully complete the indicated task to view the corresponding ending:

Drowning	Do not forgive Alex's father, and kill Alex's mother.
Bogeyman	Do not forgive Alex's father, do not kill Alex's mother, and do not save Wheeler.
Good	Forgive Alex's father, and kill Alex's mother.
Hospital	Forgive Alex's father, and do not kill Alex's mother.
UFO	Do not forgive Alex's father, do not kill Alex's mother, and save Wheeler.

Acquire all photographs to view an extra scene after the credits.

- Laser Pistol
Successfully complete the game with the UFO ending. Then, begin a new game session with the cleared saved game file, and look on top of the footlocker in Joshua's room to find the Laser Pistol.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
Kaufmann's Handiwork	Found one serum.
Out of Order	Overcomeed one Order member.
Lurk No More	Overcomeed one Lurker.
Clear the Air	Overcomeed one Smog.
Split Personality	Overcomeed one Schism.
Sightseeing	Found one photo.
Alchemilla's Finest	Overcomeed one Nurse.
Eddie's Legacy	Overcomeed one Feral.
Creeper Reaper	Overcomeed one Swarm.
To The Point	Overcomeed one Needler.
20 Points
Shades of James	Overcomeed one Siam.
25 Points
Lock 'n' Load	Found rifle.
50 Points
Health Junkie	Found all serums.
Josh's Gallery	Found all photos.
Nursery Rhymes	Found all the children's drawings.
100 Points
The Old Gods... Haven't Left This Place	Finish game on hard difficulty.

20 Points
Blood Donor	Overcomeed Scarlet.
Head Above Water	Overcomeed Amnion.
Six Feet Under	Overcomeed Sepulcher.
Catch Your Breath	Overcomeed Asphyxia.
25 Points
Science Fiction	Found Laser Pistol.
Rising Tension	Found Circular Saw.
Now About Those Drinks	Saved Wheeler.
50 Points
Compassion	Alex could not end his mother's suffering.
Mercy	Alex ended his mother's suffering.
Intensive Care	Achieved Ending 4.
In Water	Achieved Ending 2.
Forgiveness	Alex Forgives his father.
Judgement	Achieved Ending 3.
No Dogs Allowed	Achieved Ending 5.
Angela's Choice	Alex does not forgive his father.
Smile	Achieved Ending 1.

- Circular Saw
Successfully complete the game. Then, begin a new game session with the cleared saved game file, and search the Shepherd family's garage to find the Circular Saw.