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