Here is the full list of all 59 Yakuza 6: The Song of Life achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Completed all of the main story.
Completed Chapter 12.
Raised Defense to a natural 150.
Completed Chapter 10.
Raised the Heat Gauge to a natural 150.
Activated five types of eatery combos.
Completed Chapter 8.
Raised Evade to a natural 150.
Found a secret passage.
Completed 10 substories.
Completed 5 types of Trouble Missions.
Completed Chapter 6.
Jumped from a dangerously high place.
Raised Attack to a natural 150.
Raised Health to a natural 150.
Completed 31 items on the Completion List.
Obtained 25 skills.
Completed Chapter 4.
Obtained 10,000 total experience points.
Activated Extreme Heat Mode 10 times.
Experienced the trials of raising a baby.
Completed Chapter 2.
Completed 10 items on the Completion List.
Obtained 10 skills.
Obtained 1,000 total experience points.
Engaged enemies while a drink's effect is active.
Arrived in Kamurocho for the first time.
Obtained all other achievements.
Completed the game on LEGEND difficulty.
Completed 40 substories.
Completed all substories.
Completed 20 types of Trouble Missions.
Ran away from 10 encounters successfully.
Obtained all skills.
Raised all stats to a natural 200.
Raised all stats to a natural 300.
Defeated Amon on any difficulty.
Obtained 100,000 total experience points.
Completed 100 items on the Completion List.
Assembled the Kiryu Clan.
Reached level 3 in the Kiryu Clan.
Completed the Clan Creator storyline.
Raised the Kiryu Clan's influence to 10,000.
Maxed out a Kiryu Clan leader's stats.
Achieved 100 victories with the Kiryu Clan.
Played every minigame.
Experienced every RIZAP training.
Defeated the Emperor Squid.
Reached Beloved Customer rank at Snack New Gaudi.
Requested every hostess.
Chatted with both lovely Live Chat ladies.
Played every Club SEGA game.
Rescued three stray cats.
Won a baseball game.
Pulled "Great Blessing" at the temple.
Made a store employee angry at you.
Took a photo of Ono Michio-kun.
Walked 30 seconds in first-person mode.
Got surrounded by enemies while trying to take a picture.