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.
Obtained all Soul, Technique, and Body abilities.
Completed "My Baby's a Showgirl."
Completed chapter 10.
Completed chapter 9.
Completed chapter 8.
Reached Rank B in Majima Everywhere.
Completed chapter 6.
Completed chapter 7.
Completed 30 substories.
Completed chapter 5.
Assaulted by Majima from a manhole.
Met Zombie Majima.
Slugger Majima forced his way into a fight.
Completed 10 substories.
Completed "The Price of an F-Cup."
Completed chapter 4.
Met the mysterious lady, Goromi.
Obtained at least 10 Soul, Technique, and Body abilities.
Met Officer Majima.
Completed chapter 3.
Completed chapter 2.
Got chased by Majima.
Completed chapter 1.
Collected the money owed.
Obtain all other achievements.
Completed 50% of the Completion List.
Completed 100% of the Completion List.
Thug Majima forced his way into a fight.
Breaker 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.
Completed all training for Komaki Style.
Won all tournaments in the underground coliseum.
Successfully asked a hostess out on a date.
Enjoyed mahjong with a hostess.
Won all Pocket Circuit races.
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.
Assaulted by Majima from above.
Completed "Bet On A Champ."
Completed "Wife of a Yakuza."
Completed "A Doctor's Duty."
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.