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