Here is the full list of all 30 Super Samurai Rampage achievements.
Enter Lightning Mode 100 times.
Reach a highscore of at least 15000.
Reach a highscore of at least 20000.
Enter Lightning Mode 30 times.
Unlock the Bridge rampage.
Defeat 5000 enemies.
Enter Lightning Mode 10 times.
Deflect 100 projectiles.
Deflect 50 projectiles.
Defeat 100 enemies by using Focus Mode.
Defeat 1000 enemies.
Defeat 20 enemies by using Focus Mode.
Deflect 20 projectiles.
Defeat 750 enemies.
Reach a highscore of at least 2000.
Reach a highscore of at least 3000.
Reach a highscore of at least 4000.
Reach a highscore of at least 5000.
Reach a highscore of at least 1000.
Defeat 500 enemies.
Unlock the Garden rampage.
Enter Lightning Mode for the first time.
Defeat 250 enemies.
Defeat 150 enemies.
Defeat an enemy by using Focus Mode.
Defeat 75 enemies.
Reach a highscore of at least 200.
Defeat 50 enemies.
Defeat 30 enemies.
Defeat 10 enemies.