Here is the full list of all 22 Silent Hill 3 HD trophies - there are 2 bronze, 13 silver, 6 gold and 1 platinum.
Unlock all Trophies in SH3.
Unlock the "UFO" ending.
Unlock the "Possesed" ending.
Unlock the Heather Beam.
Defeat at least 75 enemies by shooting in SH3.
Acquire the Unlimited Submachine Gun.
Receive less than 500 points of damage in one game, in SH3.
Defeat at least 75 enemies by fighting in SH3.
Equip the "Princess Heart" costume.
Acquire the Flamethrower.
Complete SH3 with 2 saves or less.
Complete SH3 in 3 hours or less.
Acquire the Gold and Silver pipes.
Acquire the Beam Saber.
Unlock the "Normal" ending.
Defeat God in under 8 minutes.
Defeat Memory of Alessa in under 3 minutes.
Defeat Leonard in under 3 minutes.
Pick up at least 100 items in SH3.
Defeat Missionary in under 2 minutes.
Acquire the Silencer.
Defeat Split Worm in under 2 minutes.