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 and get an S Rank.
Unlock Kaede's alternate outfit.
Complete the game on Ultimate difficulty.
Complete all stages of Oni Spirits.
Complete the game on Normal without enhancing swords or using Jewels.
Complete the game on Normal without using herbs or medicine.
Enhance the gauntlet to maximum.
Collect all Fluorite.
Use Magic Jewels to increase Magic Power to maximum.
Obtain the Bishamon Sword.
Strike Marcellus's final form with a Deflect Critical attack.
Complete the second half of the Dark Realm.
Complete the first half of the Dark Realm.
Win a power struggle with a demon.
Complete the game in less than 3 hours.
Solve all decoder boxes.
Defeat a demon by knocking it down the waterfall.
Cut down bamboo in the bamboo forest.
Strike a demon with Kaede's Special Attack.
Spot the flock of wild geese at dusk.
Find the beetle on the tree trunk.
Unlock Samanosuke's alternate outfit.
Defeat Fortinbras.
Collect all maps.
Defeat Marcellus's final form.
Open the gate to the Demon World.
Enhance all swords to maximum.
Defeat Hecuba.
Solve all number puzzles.
Collect all files.
Obtain all armor for Samanosuke.
Absorb souls from carp.
Enhance all orbs to maximum.
Use Power Jewels to increase Vitality to maximum.
Use the Decorated Sword to enter the East Area.
Obtain all long-range weapons.
Defeat Barabazuu.
Kill a demon with a battering ram.
Obtain the Vision Staff.
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.
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.