Full list of all 32 Silent Hill Homecoming achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
Achieved Ending 2
Achieved Ending 1
.. Haven't Left This Place Complete game on HARD difficulty.
Found all Serums
Found all the Children's Drawings
Found ALL Photos
Alex ended his mother's suffering
Found Rifle
Found Circular Saw
Found Laser Pistol
Achieved Ending 4
Achieved Ending 3
Achieved Ending 5
Defeated Amnion
Saved Wheeler
Alex forgives his father
Alex does not forgive his father
Defeated Asphyxia
Alex could not end his mother's suffering
Defeated 1 Order member
Defeated Scarlet
Defeated 1 Siam
Defeated 1 Schism
Defeated Sepulcher
Defeated 1 Needler
Defeated 1 Smog
Defeated 1 Feral
Found 1 Serum
Defeated 1 Lurker
Found 1 Photo
Defeated 1 Swarm
Defeated 1 Nurse