Here is the full list of all 56 Onimusha: Warlords trophies - there are 48 bronze, 5 silver, 2 gold and 1 platinum.
Collect all trophies.
Unlock Kaede's alternate outfit.
Complete the game and get an S Rank.
Complete the game in less than 3 hours.
Complete the game on Ultimate difficulty.
Win a power struggle with a demon.
Complete all stages of Oni Spirits.
Obtain the Bishamon Sword.
Strike Marcellus's final form with a Deflect Critical attack.
Enhance the gauntlet to maximum.
Complete the second half of the Dark Realm.
Collect all Fluorite.
Complete the first half of the Dark Realm.
Complete the game on Normal without enhancing swords or using Jewels.
Unlock Samanosuke's alternate outfit.
Complete the game on Normal without using herbs or medicine.
Defeat Fortinbras.
Enhance all swords to maximum.
Collect all maps.
Defeat Marcellus's final form.
Use Magic Jewels to increase Magic Power to maximum.
Use Power Jewels to increase Vitality to maximum.
Open the gate to the Demon World.
Defeat Hecuba.
Solve all number puzzles.
Collect all files.
Solve all decoder boxes.
Obtain all armor for Samanosuke.
Defeat a demon by knocking it down the waterfall.
Absorb souls from carp.
Use the Decorated Sword to enter the East Area.
Obtain all long-range weapons.
Defeat Barabazuu.
Kill a demon with a battering ram.
Obtain the Vision Staff.
Speak to the first and second old moth man.
Defeat Stylado.
Enhance all orbs to maximum.
Obtain the Sacred Knife.
Cut down bamboo in the bamboo forest.
Strike a demon with Kaede's Special Attack.
Obtain the Rosary of Communication.
Unseal the path to the Keep Underground.
Obtain the Arashi.
Defeat Marcellus.
Solve the crest puzzle.
Enter the abandoned keep.
Obtain the Kouen.
Defeat Osric.
Save a soldier under attack by demons.
Enhance equipment at Magic Mirror.
Use a Special Attack to kill a demon.
Obtain the Shiden.
Spot the flock of wild geese at dusk.
Find the beetle on the tree trunk.
Use the gauntlet to absorb demon souls.