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