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 1
.. Haven't Left This Place Complete game on HARD difficulty.
Found Circular Saw
Found Laser Pistol
Achieved Ending 2
Alex ended his mother's suffering
Achieved Ending 4
Achieved Ending 3
Achieved Ending 5
Defeated Amnion
Found all Serums
Saved Wheeler
Found all the Children's Drawings
Alex does not forgive his father
Alex forgives his father
Found ALL Photos
Defeated Asphyxia
Alex could not end his mother's suffering
Found Rifle
Defeated 1 Order member
Defeated Scarlet
Defeated 1 Siam
Defeated 1 Schism
Defeated Sepulcher
Found 1 Serum
Defeated 1 Needler
Defeated 1 Smog
Defeated 1 Feral
Defeated 1 Lurker
Found 1 Photo
Defeated 1 Swarm
Defeated 1 Nurse