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