All Working Silent Hill: Homecoming Cheats - Xbox 360

Cheat Mode
Enter the following codes at the "Press Start" screen:

[Up], [Up], [Down], [Down], [Left], [Right], [Left], [Right], [Circle] - Unlock Young Alex Costume.

Achievements
Complete each achievement to get the allotted gamerscore:

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.

Unlock Different Endings
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 - Similiar to the Bogeyman ending. Don't forgive your father, don't kill your mother, BUT do save Wheeler.

Unlock Extra Weapons
Beat the game once to unlock Circular Saw (can be found in the garage at the Shepard's family home) and Laser Pistol (can be found in Joshua's room, on top of his foot locker).