"Bogeyman" Ending - Don't forgive your father, don't kill your mother, and don't save Wheeler.
"Drowning" Ending - Don't forgive your father, but do kill your mother.
"Good" Ending - Forgive your father and kill your mother out of mercy.
"Hospital" Ending - Forgive your father and don't kill your mother.
"UFO" Ending - Similar to the Bogeyman ending. Don't forgive your father, don't kill your mother, BUT do save Wheeler.
Entry location:
You can only find these weapons after beating the game at least once.
Circular Saw - Can be found in the garage at the Shepard's family home
Laser Pistol - Can be found in Joshua's room, on top of his foot locker
Submitted By Circle Saw
Xbox 360 PS3 PC
Unlockable Costumes
Bogeyman a.k.a. Pyramid Head Helmet - Unlocked by getting the "Bogeyman" Ending
Deputy Alex - Unlocked by getting the "UFO" Ending
Order Soldier Outfit - Unlocked by getting the "Drowning" Ending
Orderly Alex - Unlocked by getting the "Hospital" Ending
Trucker Alex - Unlocked by getting the "Good" Ending
Submitted By Circle Saw
Xbox 360
Achievements
Alchemilla's Finest (10) - Defeated 1 Nurse
Clear the Air (10) - Defeated 1 Smog
Creeper Reaper (10) - Defeated 1 Swarm
Eddie's Legacy (10) - Defeated 1 Feral
Health Junkie (50) - Found all Serums
Josh's Gallery (50) - Found ALL Photos
Kaufmann's Handiwork (10) - Found 1 Serum
Lock 'n' Load (25) - Found Rifle
Lurk No More (10) - Defeated 1 Lurker
Nursery Rhymes (50) - Found all the Children's Drawings
Out of Order (10) - Defeated 1 Order member
Shades of James (20) - Defeated 1 Siam
Sightseeing (10) - Found 1 Photo
Split Personality (10) - Defeated 1 Schism
The Old Gods... (100) - .. Haven't Left This Place Complete game on HARD difficulty.
To The Point (10) - Defeated 1 Needler