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