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