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