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