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 30 substories.
Completed chapter 12.
Completed chapter 11.
Assaulted by Majima from a manhole.
Completed chapter 10.
Completed chapter 9.
Completed chapter 8.
Reached Rank B in Majima Everywhere.
Completed chapter 7.
Slugger Majima forced his way into a fight.
Met Zombie Majima.
Completed chapter 6.
Completed 10 substories.
Completed chapter 5.
Met Officer Majima.
Completed "The Price of an F-Cup."
Got chased by Majima.
Completed chapter 4.
Completed chapter 3.
Completed chapter 2.
Obtained at least 10 Soul, Technique, and Body abilities.
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.
Obtained all Soul, Technique, and Body abilities.
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.
Met the mysterious lady, Goromi.
Completed "My Baby's a Showgirl."
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.