Here is the full list of all 55 Yakuza Kiwami achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Completed the final chapter.
Completed chapter 12.
Completed chapter 11.
Upgraded all Majima Everywhere abilities.
Won all tournaments in the underground coliseum.
Assaulted by Majima from above.
Completed all training for Komaki Style.
Obtained all Soul, Technique, and Body abilities.
Completed 50% of the Completion List.
The Mad Dog of Shimano forced his way into a fight.
Completed chapter 10.
Completed chapter 9.
Completed chapter 8.
Breaker Majima forced his way into a fight.
Reached Rank B in Majima Everywhere.
Completed chapter 7.
Completed "A Doctor's Duty."
Completed chapter 6.
Completed 30 substories.
Completed "My Baby's a Showgirl."
Thug Majima forced his way into a fight.
Assaulted by Majima from a manhole.
Completed chapter 5.
Met Zombie Majima.
Won all Pocket Circuit races.
Slugger Majima forced his way into a fight.
Met the mysterious lady, Goromi.
Spent a steamy moment with Rina.
Completed chapter 4.
Completed 10 substories.
Got chased by Majima.
Met Officer Majima.
Obtained at least 10 Soul, Technique, and Body abilities.
Completed "The Price of an F-Cup."
Completed chapter 3.
Completed chapter 2.
Completed chapter 1.
Collected the money owed.
Obtain all other achievements.
Completed 100% of the Completion List.
Spent a steamy moment with Yui.
Completed all substories.
Successfully asked a hostess out on a date.
Enjoyed mahjong with a hostess.
Won against all rivals in MesuKing.
Played all minigames.
Walked 1km during Premium Adventure while holding Haruka's hand.
Completed the game in Legend Mode.
Completed "Bet On A Champ."
Completed "Wife of a Yakuza."
Completed "The Fake Mizuki's Truth."
Completed "Man On a Ledge."
Defeated Amon.
Completed all of the Climax Battles.
Obtained EX Rank on Haruka's Requests.