Attained the "Shura" ending

Defeated "Isshin Ashina"

Attained the "Purification" ending

Defeated "Sword Saint Isshin Ashina"

Defeated "Great Shinobi - Owl" at the Hirata Estate

Upgraded Vitality and Posture to their limit

Defeated the "Divine Dragon" and obtained the "Divine Dragon's Tears"

Defeated the "Great Serpent".

Defeated the "Corrupted Monk"

Defeated "Great Shinobi - Owl"

Used the Mortal Blade to sever the Guardian Ape's undying

Defeated the "Guardian Ape"

Defeated "Genichiro Ashina"