Here is the full list of all 56 Like a Dragon: Ishin! achievements. It takes around 120-150 hours to unlock all of the achievements on Windows.
Completed the final chapter.
Completed all Substories.
Completed Chapter 12.
Completed Chapter 10.
Gathered 100 troopers for the Third Division.
Cleared the Sanada Stronghold.
Cleared the Bandits' Mine.
Reached Level 50.
Completed Chapter 8.
Cleared the Bandits' Cave.
Completed Chapter 6.
Paid off Haruka's debt in full.
Entered a Battle Dungeon 3 times.
Completed Chapter 4.
Earned at least 300,000 Virtue in total.
Reached max Social Rank in one of the locales.
Changed the interior design of your second home.
Completed 50 tasks in the Diligence Records.
Completed 40 Substories.
Earned at least 100,000 Virtue in total.
Grew 10 different kinds of plants in the garden.
Watched a Slice of Life event at your second home.
Cooked 7 different dishes.
Fulfilled 10 trade orders at your second home.
Completed 20 tasks in the Diligence Records.
Earned at least 50,000 Virtue in total.
Trained with each master of combat.
Completed 10 Substories.
Placed bets on 5 chicken races.
Completed Chapter 2.
Caught a total of 10 fish.
Completed 5 tasks in the Diligence Records.
Earned at least 10,000 Virtue in total.
Completed your first Bond.
Performed every song at Utamaruya.
Unlocked 10 abilities with Soul Orbs.
Set foot in Tosa.
Collected all achievements.
Completed the game on Legend difficulty.
Completed every Ultimate Challenge.
Brought the Completion List to 50%.
Brought the Completion List to 100%.
Completed all tasks in the Diligence Records.
Completed all Bonds.
Ordered at least one item at every restaurant.
Broke Ryoma's stats beyond their limits.
Won 10 arena battles.
Attained all Revelations.
Enhanced equipment 100 times.
Defeated 100 enemies with Special Moves outside Ultimate Challenges.
Helped the Tachibanagumi bring the Tengu to justice.
Played every minigame.
Tried your hand at each type of gambling.
Made at least 10 ryo in sales at the Udon Shop.
Performed every dance at Nichibuza.
Cleared each of the courtesan minigames.