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