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