Here is the full list of all 34 Sekiro: Shadows Die Twice trophies - there are 18 bronze, 11 silver, 4 gold and 1 platinum.
All trophies have been unlocked.
Acquired all skills
Attained the "Return" ending
Defeated all bosses
Attained the "Purification" ending
Upgraded all Prosthetic Tools to their limit
Used Lapis Lazuli to upgrade any tool to its limit
Defeated "Great Shinobi - Owl" at the Hirata Estate
Upgraded Vitality and Posture to their limit
Attained the "Shura" ending
Defeated "Isshin Ashina"
Grasped the inner mysteries of any combat style
Attained the "Immortal Severance" ending
Defeated "Sword Saint Isshin Ashina"
Defeated the "Demon of Hatred"
Defeated the "Divine Dragon" and obtained the "Divine Dragon's Tears"
Defeated the "Great Colored Carp".
Fully upgraded the "Healing Gourd"
Defeated the "Corrupted Monk"
Defeated the "Great Serpent".
Traveled to all areas of the game
Defeated "Great Shinobi - Owl"
Acquired all Ninjutsu Techniques
Used the Mortal Blade to sever the Guardian Ape's undying
Caught the Folding Screen Monkeys
Acquired all Prosthetic Tools
Defeated the "Guardian Ape"
Defeated "Genichiro Ashina"
Encountered the Memorial Mob
Defeated "Lady Butterfly"
Defeated "Gyoubu Masataka Oniwa"
Returned from the dead using "Resurrection" for the first time
Acquired the Shinobi Prosthetic
Received the "Kusabimaru" from Kuro