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