Here is the full list of all 51 Way of the Samurai 3 trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Acquired all the Trophies.
Obtained 20 titles.
Mastered all skills of Ninja Stance.
Mastered all skills of Single Stance.
Mastered all skills of Draw Stance.
Mastered all skills of Side Stance.
Mastered all skills of Lower Stance.
Mastered all skills of Middle Stance.
Mastered all skills of Spear Stance.
Completed and discovered all Endings.
Mastered all skills for thirty weapons.
Mastered all skills of Upper Stance.
Mastered all skills of Ninja Dual Sword Stance.
Mastered all skills of Dual Sword Stance.
Learned a total of 100 skills.
Mastered all skills of Bare Hands Stance.
Cleared the game in Instant Kill difficulty.
Total Samurai Points exceeded 10000 points.
Created a weapon.
Cleared the game in Hard difficulty.
Obtained all Outfits.
Mastered all skills for a weapon.
Obtained 50 different weapons.
Completed 50 jobs successfully.
Completed and discovered 5 Endings.
Forged a weapon for the first time.
Defeated an enemy with Blunt Attack using a weapon with zero durability.
Killed an enemy using a weapon with zero durability.
Defeated Sensei at the Dojo.
Cleared game with more than 120% Samurai Rating.
Completed and discovered the True Ending.
Cleared the game in Normal difficulty.
Defeated Shuzen Fujimori.
Obtained 5 titles.
Played more than 10 hours.
Total Samurai Points exceeded 2000 points.
Obtained all Heads.
Achieved 100 Chain Kills.
Achieved 10 Chain Kills.
Broke an opponent's weapon.
Cleared the game in Easy difficulty.
Completed the game.
Learned a total of 10 skills.
Obtained a partner.
Obtained 10 different weapons.
Defeated an opponent with a Blunt Attack.
Total Samurai Points exceeded 200 points.
Obtained an extra Sword Safe.
Completed a job successfully.
Learned a skill for the first time.
Fist time killing an enemy.