Here is the full list of all 47 ROMANCE OF THE THREE KINGDOMS XIV achievements.
Proof of clearing the 5 standard scenarios of War Chronicles mode
Proof of completion of all achievements in RTK14
Proof of clearing the 7 normal scenarios and "Gathering of Heroes" scenario
Proof of clearing the scenario "Chu Shi Biao"
Proof of obtaining an S rank in War Chronicles mode
Proof of clearing the scenario "Assault on Hanzhong"
Proof of your Local doctrine level reaching max
Proof of clearing the scenario "Gathering of Heroes"
Proof of your Fame doctrine level reaching max
Proof of clearing the scenario "The Battle of Guandu"
Proof of your Confucian doctrine level reaching max
Proof of clearing the scenario "Warlords"
Proof of your Unfettered doctrine level reaching max
Proof of clearing a scenario within 10 years after starting it
Proof of clearing the scenario "Anti-Dong Zhuo Coalition"
Proof of your Might doctrine level reaching max
Proof of viewing both halves of The Love Triangle Plot historic event
Proof of unlocking 20 historic events
Proof of clearing the scenario "The Three Visits"
Proof of clearing the scenario as the kingdom of Han
Proof of viewing all 3 parts of the Three Visits historic event
Proof of clearing the game by wiping out all other forces
Proof of obtaining all Acquired Items from foreign nations through trade, and clearing the scenario
Proof of clearing the scenario "Yellow Turban Rebellion"
Proof of having all outlander forces affiliate with your force, and clearing the scenario
Proof of your Noble doctrine level reaching max
Proof of having an outlander force affiliate with your force
Proof of viewing "Friendship with (Foreign Nation) - 2" events for multiple outlander forces during one game
Proof of collecting 50 specialties in one playthrough
Proof that your max retainer officers is 200
Proof of successful submission demand
Proof that your max controlled areas is 200
Proof of obtaining all Acquired Items from one foreign nation through trade
Proof of starting below King and being appointed Emperor
Proof of having successfully performed the Dual Destruction, Unattended Home, Estrange, Hidden Poison, and Placation plots
Proof of starting below Grand Minister and being appointed Duke
Proof of successfully performing Surround&Conquer
Proof of a single officer having 10 tactics
Proof of achieving Learn
Proof of starting below Lt. Colonel and being appointed Grand General
Proof of starting below Regional Governor and being appointed Lt. Colonel
Proof of raising one of your controlled areas barracks level to max
Proof of raising one of your controlled areas agriculture level to max
Proof of raising one of your controlled areas commerce level to max
Proof of successfully forming an alliance
Proof of starting below Lt. Governor and being appointed Regional Governor
Proof of capturing a city and obtaining a new geographic advantage