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 Fake Mizuki's Truth."
Obtained all Soul, Technique, and Body abilities.
Completed 50% of the Completion List.
Walked 1km during Premium Adventure while holding Haruka's hand.
Completed the final chapter.
Completed chapter 12.
Completed chapter 11.
Completed "A Doctor's Duty."
Completed "Bet On A Champ."
Completed chapter 10.
Completed chapter 9.
Completed chapter 8.
Completed "My Baby's a Showgirl."
Breaker Majima forced his way into a fight.
Completed 30 substories.
Reached Rank B in Majima Everywhere.
Met Zombie Majima.
Spent a steamy moment with Rina.
Completed chapter 7.
Met the mysterious lady, Goromi.
Completed 10 substories.
Completed chapter 6.
Spent a steamy moment with Yui.
Thug Majima forced his way into a fight.
Enjoyed mahjong with a hostess.
Completed chapter 5.
Completed chapter 4.
Successfully asked a hostess out on a date.
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 100% of the Completion List.
Slugger Majima forced his way into a fight.
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.
Won all Pocket Circuit races.
Won against all rivals in MesuKing.
Played all minigames.
Completed the game in Legend Mode.
Assaulted by Majima from above.
Assaulted by Majima from a manhole.
Completed "Wife of a Yakuza."
Completed "Man On a Ledge."
Defeated Amon.
Completed all of the Climax Battles.
Obtained EX Rank on Haruka's Requests.