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 "Man On a Ledge."
Assaulted by Majima from above.
Spent a steamy moment with Yui.
Slugger Majima forced his way into a fight.
Spent a steamy moment with Rina.
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 9.
Completed chapter 8.
Thug Majima forced his way into a fight.
Reached Rank B in Majima Everywhere.
Completed chapter 7.
Completed "Bet On A Champ."
Completed "A Doctor's Duty."
Completed chapter 6.
Successfully asked a hostess out on a date.
Completed 30 substories.
Completed "My Baby's a Showgirl."
Completed chapter 5.
Breaker Majima forced his way into a fight.
Met Zombie Majima.
Completed chapter 4.
Completed 10 substories.
Met the mysterious lady, Goromi.
Completed "The Price of an F-Cup."
Met Officer Majima.
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 50% of the Completion List.
Completed 100% of the Completion List.
The Mad Dog of Shimano forced his way into a fight.
Upgraded all Majima Everywhere abilities.
Completed all substories.
Completed all training for Komaki Style.
Won all tournaments in the underground coliseum.
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 a manhole.
Defeated Amon.
Completed all of the Climax Battles.
Obtained EX Rank on Haruka's Requests.