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.
Completed 20 types of Trouble Missions.
Completed Chapter 10.
Raised the Heat Gauge to a natural 150.
Raised Defense to a natural 150.
Completed Chapter 8.
Activated five types of eatery combos.
Rescued three stray cats.
Completed Chapter 6.
Completed 10 substories.
Raised Evade to a natural 150.
Made a store employee angry at you.
Raised Attack to a natural 150.
Completed 5 types of Trouble Missions.
Raised Health to a natural 150.
Completed Chapter 4.
Engaged enemies while a drink's effect is active.
Obtained 10,000 total experience points.
Completed 31 items on the Completion List.
Obtained 25 skills.
Experienced the trials of raising a baby.
Completed Chapter 2.
Activated Extreme Heat Mode 10 times.
Obtained 10 skills.
Found a secret passage.
Completed 10 items on the Completion List.
Obtained 1,000 total experience points.
Jumped from a dangerously high place.
Arrived in Kamurocho for the first time.
Obtained all other achievements.
Completed the game on LEGEND difficulty.
Completed 40 substories.
Completed all substories.
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.
Won a baseball game.
Pulled "Great Blessing" at the temple.
Took a photo of Ono Michio-kun.
Walked 30 seconds in first-person mode.
Got surrounded by enemies while trying to take a picture.