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