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