Yakuza 6: The Song of Life

This achievement will take a lot of grinding to get. Most of the farming for the method I used on the PS4 version was from farming for money from clan creator. The money will be used for Rizap gym items Burn+ and Quick Burner then going to Sushi Gin to eat to get a decent amount to each of the 5 xp types. This video will show this method.
To start farming for money you first want to have beaten every main Clan Creator mission. Once you’ve done that you will be farming one of two missions depending on if you want to go for quick and efficient with the “The Tanahashi Army’s Remainders!” which will give you 100k per run plus I think purple or orange xp or if you want to get more money and gang xp if you can effectively do it go for “The Amon Army! Kamurocho Part 3” that mission will earn you 200k per run and Orange xp. The person in the video does the first mission I listed and did that mission a lot so they could get their 100 Clan Creator wins achievement while doing this. This is the Hierarchy I used when I played on PS4 (Note: I used dlc characters which made it easier but you can replace the people with the blue and purple backgrounds with the character's rare version. I will leave a list of codes you can use to unlock characters for Clan creator and what their rarity is at the bottom of the guide).

After you’ve gotten a lot of money go to Rizap and buy Burn+ and Quick Burner. After you’ve gotten those items go to sushi gin and get everything besides chiefs pudding. Then go to your items and use the items you just bought to lower your hunger. Once you’ve run out of both of those items go back to Rizap and rebuy those items and keep doing this for a while. After a little while, you may only need red and blue xp to level up the last few stats. To easily get those we’re gonna change the strat a little bit to just staying in Rizap and gonna just buy Muscle so you get 100 xp to red blue and orange and buying either quick burn if you want the extra 10 xp to each or just getting Burn+ if you want to burn hunger faster. After about a few hours of getting money and running back and forth between Rizap and Sushi Gin you should have your all your stats and skills maxed out.

Here’s a list of all Character codes you can use in Clan Creator:
BLACKPANTSKOUMEI = Koumei (Rare)
MYSTRYMANSATSUKI = Satsuki (Rare)
T2OMQ7FM5KBJPOUR = Majima (Common)
S66X7BAQN4ECAEE9 = Kiryu (Common)
ELingobernable00 = Naito (Rare)
RainmakerMrOkada = Okada (Rare)
MisterTokyoDome0 = Tanahashi (Rare)
THE6THHEADOFTOJO = Daigo (Rare)
detectivemanDate = Makoto Date (Rare)
BinwanProducer00 = Toru Yano (Rare)
TheSupernovaRana = Kushida (Rare)
0Banshee0Muzzle0 = Evil (Rare)
ShibataGotoSleep = Katsuyori Shibata (Rare)
NagataLockNagata = Yuji Nagata (Rare)
7R30M9ZDUH0MJIA1 = Amon (Common)
VRJR9A7SX9Z6MMTV = Saejima (Common)
3QXI6YIGSH03DETX = Onomichio (Common)
STRONGMACHINEDDT = Strong Machine (Rare)
0HERCULESCUTTER0 = Nakanashi (Rare)
M5BXOKQRSIELV19D = Daigo (Common)
UVHVD2H7WI95GHNL = Date (Common)
PURORESUNEWJAPAN = Captain New Japan (Rare)
NAPQWI7OTVM124HA = Koumei (Common)
ITSTHEGEDOCLUTCH = Gedo (Rare)
PNJTEF9STVONK4U9 = Satsuki (Common)
MasterofDropkick = Taguchi (Rare)
00IshiiDriller00 = Ishii (Rare)
FirebirdSplasher = Bushi (Rare)
AdreamingAkiyama = Akiyama (Rare)
HeaintNoJoeShmoe = Joe (Rare)
shouldertoleanon = Masao (Rare)
AMasterbartender = Bartender Guy (Rare)
BestCoachSodachi = Sodachi (Rare)
OHNOONOMICHIOKUN = Onomichio (Rare)
0INTHEREDAKIYAMA = Akiyama (Super Rare)
NorestforKazumaK = Kazuma Kiryu (Rare)
KIRYUSAVEMEPLEAZ = Daigo (Super Rare)
ATPERCENTDRAGON = Kiryu (Super Rare)
THESECRETJOAMON = Amon (Rare)
maddoggoromajima = Majima (Rare)
DateWithMako2018 = Date (Super Rare)
TheAnacondaCross = Hiroyoshi Tenzan (Super Rare)
KojimaCozyCutter = Satoshi Kojima (Super Rare)
YanoOniKoroshi00 = Toru Yano (Super Rare)
TheStardustPress = Tetsuya Naito (Super Rare)
thedragonsleeper = Hiroshi Tanahashi (Super Rare)
rainmakerokada0 = Kazuchika Okada (Super Rare)