Here is the full list of all 45 SAMURAI SHODOWN achievements.
[DOJO] Defeat your own ghost.
[DOJO] Defeat a ghost character 10 times.
[DOJO] Fight a ghost match.
Defeat an opponent for the first time using a Weapon Flipping Technique.
[DOJO] Receive your first ghost.
[ONLINE] Fight a Ranked Match.
[TUTORIAL] Complete all lessons.
Fill the Rage Gauge 50 times.
Perform 10 Just Defenses.
Defeat 10 opponents with Lightning Blade strikes.
Defeat 10 opponents with heavy attacks.
Defeat 10 opponents using a Special Move.
[STORY] Clear with any character.
[STORY] Defeat the boss.
[STORY] Clear after using a Continue.
Obtain your first perfect victory.
Successfully use Just Defense for the first time.
Defeat an opponent for the first time using Lightning Blade.
Win a round within 10 seconds of the start of battle.
Successfully use a Counter for the first time.
Earned all achievements in the game.
[STORY] Clear with four different characters.
[STORY] Clear with 12 different characters.
[STORY] Clear with 16 different characters.
[STORY] Clear without using a Continue.
[BATTLE] Finish Gauntlet Mode with any character.
[BATTLE] Win 5 successive victories in Survival Mode.
[BATTLE] Extend the timer by at least 150 seconds in Time Trial Mode.
[DOJO] Defeat a ghost character 50 times.
[DOJO] Defeat a ghost character 100 times.
[ONLINE] Play one Casual Match.
[ONLINE] Fight a Team Battle.
[GALLERY] Unlock 15 movies.
[GALLERY] Unlock 25 movies.
[GALLERY] Unlock 17 pieces of artwork.
Defeat 10 opponents with Weapon Flipping Techniques.
Defeat an opponent for the first time using a Super Special Move.
Defeat 10 opponents with Super Special Moves.
Counter an opponent's attack 10 times.
Knock down an opponent with a Stance Break 10 times.
Perform a Blade Catch 10 times.
Use Rage Explosion 50 times.
Defeat an opponent while unarmed for an entire battle.
Defeat an opponent by only kicking for an entire battle.
Use the same character 100 times.