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