Yakuza Kiwami 2

So let's just start this off by saying that this is not an achievement that is cumulative throughout all clan creator missions this achievement is for getting 200k in one mission (Also I don't use any dlc characters in this guide so you're fine if you have not bought the dlc to get the op SSR characters). My recommendation for getting this achievement is by doing it on main mission 11 "The True Strength of Mutoh Realty". Some other people recommend the mission trials and tribulations. When I first did The True Strength of Mutoh Realty I got 189k just playing regularly collecting most of the money that would appear in the mission. With the help of one character, you can find through scouting is called Kazuchika Okada or as his nickname in Yakuza 6 is called the Rainmaker (because he makes it rain money as said in his intro cutscene to clan creator in Yakuza 6). What's good about his character ability is his Essence of Rainmaker which costs 500 spirit point and you get a 5x multiplayer for all cash pickups for 30 seconds. This is helpful because there are lots of cash pickups during this mission. I'm going to tell you what I used for my team set up was (and how to get them), what characters should go into your first 4 slots so you have all the abilities set up and my formation. I'd recommend all characters be level 5 or above and for the Truck and Van to be fully fortified just to make this mission easy.

Team setup:
first 4 slots on the left to fill out your Dpad abilities
Hiroshi Tanahashi (SR)-I love you. (Heals all members for 40% of their health for 2,000.)
Ukyo the Bridge Guard (SR)-Essence of repair. (Repairs 30% durability for all equipment cost 6,000)
Kazuchika Okada (SR)- Essence of Rainmaker. (5x money earned when picking up cash for 30 seconds for 500)
Younger Higuchi (C) or Masachiro Chono (SR) if you've beaten clan creator- Higuchi (Essence of Inspiration: 1.5 attack and invincibility for all allies for 15 seconds costs 2,500.) Masachiro (Black Charisma: 3x attack power and invincibility for 15 seconds costs 4,500).

For the rest of the lineup
Goro Majima (SR)
Yuya (SR)
Masao Yanagi (SR)
Jo Amon (can be replaced with Hiroyoshi Tenzan (SR) if you haven't beaten all sub-stories)
Sotaro Komaki

How to get the characters I use:
Hiroshi Tanahashi (SR)-Found while scouting
Ukyo the Bridge Guard (SR)- Can be recruited after beating this street boss in Sotenbori on Iwao Bridge after beating 15 groups of thugs specifically in Sotenbori.
Kazuchika Okada (SR)- Found while scouting.
Younger Higuchi (C)- Can be found while scouting
Goro Majima (SR)- You start out with him.
Yuya- Complete Substory #3 Embracing My True Self and then talk to him at the construction site to recruit him.
Masao Yanagi (SR)- Can be found in the coliseum room after you have beaten him in a tournament.
Jo Amon (SR)- Can only be obtained after beating him on the last sub story The Ultimate Assassin. After you have defeated him you'll find him on the rooftop of Serena.
Hiroyoshi Tenzan (SR)- Found while scouting.
Sotaro Komaki: You must complete his sub-stories and then fight him in the Coliseum and win. He'll show up on the construction site after you've beaten him.

Formation and general info:
At the top of the map, I have Komaki since next to no enemies really come from there that much and when a boss comes I usually can send someone to help him.

Left side of the top van I have Majima and Yuya to easily take care of the enemies who show up there.

Right side of the top van I have Jo Amon and Masao to take care of the enemies on the right side.

Inbetween the van and the truck I have Kazuchika because I can let him focus on stragglers and use his ability to pick up cash.

Below the truck on the bottom, I have Hiroshi, Ukyo, and Higuchi/Masachiro taking out the enemies who show up there.

During this mission don't be afraid to use the points you get for raising the characters' spirit level you'll get a lot of points from this mission. Whenever a boss enemy shows up don't be afraid to pop Higuchi/Masachiro ability to make everyone be invincible for 15 seconds to make this easier. Whenever you see money use Kazuchika money ability and pick up all the money before the wave ends. if you do not pick up the money before the wave ends it will disappear. Each cash pile is worth 2k points normally so using his ability will make all of those piles 10k so don't let them go to waste. The good thing about his ability is that the in-between rounds where it shows you where the enemies come from the ability timer doesn't go down.

After all, is said is done if everything went right you should've gotten a lot more then 200k points. My ending score was 440k the most I've seen from this mission was 521k.