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