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