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.
Complete the game on Ultimate difficulty.
Enhance the gauntlet to maximum.
Complete all stages of Oni Spirits.
Unlock Kaede's alternate outfit.
Complete the game and get an S Rank.
Collect all Fluorite.
Use Magic Jewels to increase Magic Power to maximum.
Solve all decoder boxes.
Defeat a demon by knocking it down the waterfall.
Use Power Jewels to increase Vitality to maximum.
Cut down bamboo in the bamboo forest.
Obtain the Bishamon Sword.
Enhance all swords to maximum.
Complete the second half of the Dark Realm.
Complete the first half of the Dark Realm.
Win a power struggle with a demon.
Strike Marcellus's final form with a Deflect Critical attack.
Find the beetle on the tree trunk.
Spot the flock of wild geese at dusk.
Strike a demon with Kaede's Special Attack.
Unlock Samanosuke's alternate outfit.
Complete the game in less than 3 hours.
Complete the game on Normal without using herbs or medicine.
Complete the game on Normal without enhancing swords or using Jewels.
Defeat Fortinbras.
Collect all maps.
Defeat Marcellus's final form.
Open the gate to the Demon World.
Defeat Hecuba.
Solve all number puzzles.
Collect all files.
Obtain all armor for Samanosuke.
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.
Speak to the first and second old moth man.
Obtain the Vision Staff.
Defeat Stylado.
Obtain the Sacred Knife.
Enhance all orbs to maximum.
Obtain the Rosary of Communication.
Unseal the path to the Keep Underground.
Obtain the Arashi.
Defeat Marcellus.
Solve the crest puzzle.
Enhance equipment at Magic Mirror.
Enter the abandoned keep.
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.