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