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.
Complete all stages of Oni Spirits.
Complete the game and get an S Rank.
Unlock Kaede's alternate outfit.
Collect all Fluorite.
Collect all files.
Use Magic Jewels to increase Magic Power to maximum.
Obtain all long-range weapons.
Spot the flock of wild geese at dusk.
Find the beetle on the tree trunk.
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.
Absorb souls from carp.
Strike Marcellus's final form with a Deflect Critical attack.
Obtain the Bishamon Sword.
Unlock Samanosuke's alternate outfit.
Defeat Fortinbras.
Collect all maps.
Defeat Marcellus's final form.
Open the gate to the Demon World.
Enhance the gauntlet to maximum.
Defeat Hecuba.
Solve all number puzzles.
Use Power Jewels to increase Vitality to maximum.
Solve all decoder boxes.
Obtain all armor for Samanosuke.
Defeat a demon by knocking it down the waterfall.
Enhance all orbs to maximum.
Use the Decorated Sword to enter the East Area.
Defeat Barabazuu.
Kill a demon with a battering ram.
Obtain the Vision Staff.
Enhance all swords to maximum.
Complete the second half of the Dark Realm.
Complete the first half of the Dark Realm.
Defeat Stylado.
Obtain the Sacred Knife.
Cut down bamboo in the bamboo forest.
Speak to the first and second old moth man.
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.
Win a power struggle with a demon.
Enter the abandoned keep.
Obtain the Kouen.
Defeat Osric.
Save a soldier under attack by demons.
Enhance equipment at Magic Mirror.
Obtain the Shiden.
Use a Special Attack to kill a demon.
Use the gauntlet to absorb demon souls.