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