Here is the full list of all 51 Samurai Warriors 4 Empires trophies - there are 38 bronze, 10 silver, 2 gold and 1 platinum.
Obtain all of the trophies.
Unlock 100% of all events for viewing.
Clear Genesis Mode.
Unlock all of the famous officers in the Archives.
Obtain all of the Battlefield Tactics.
Establish a Rival.
Obtain all of the banners.
Obtain all of the formations.
Establish a Master and Protege relationship.
Build a clan of at least 100 officers in Conquest Mode.
Unite the Chugoku region in Conquest Mode.
Unite the land in Conquest Mode for the first time.
Unlock 50% of all events for viewing.
Build all the different types of castle.
Appoint women as your Four Guardians.
Appoint Four Guardians of your house.
Unite the Kyushu region in Conquest Mode.
Unite the Shikoku region in Conquest Mode.
Unite the Kinki region in Conquest Mode.
Unite the Chubu region in Conquest Mode.
Establish a Sworn Ally.
Unite the Hokuriku region in Conquest Mode.
Unite the Kanto region in Conquest Mode.
Unite the Tohoku region in Conquest Mode.
Build a clan of at least 50 officers in Conquest Mode.
Establish a Retainer.
Increase Defense for a single castle territory to its maximum level.
Appoint women as all of your Magistrates.
Unlock 25% of all events for viewing.
Establish a Nemesis.
Establish a Friend.
Increase the Rice Yield for a single castle territory to its maximum level.
Increase Commerce for a single castle territory to its maximum level.
Establish a Spouse.
Obtain 50 banners.
Clear all Conquest Mode scenarios (excluding add-on scenarios).
Build a clan of at least 20 officers in Conquest Mode.
Complete a scenario without executing anybody.
Rebuild your home castle for the first time.
Conquer an enemy territory for the first time.
Capture all of the enemy bases and win the battle.
Achieve 1,000 K.O.s in a single battle.
Capture a chain of enemy bases.
Capture an enemy base.
Obtain a Battlefield Tactic for the first time.
Obtain a formation for the first time.
Achieve a combo count of 1,000 or more.
Appoint a woman as your Strategist.
Create a scenario in Genesis Mode.
Obtain a banner.
Create a custom character.