Yakuza 4 Remastered

For this achievement, you have to buy guns for Saejima but on the PS4 version you can just buy the same gun 5 times. The only problem is the cheapest gun is worth 120,000 at the Kamurocho Rooftops East Weapon Shop. You can try to mod weapons to make other guns but I wouldn’t recommend it. Don’t bother trying to get this when you first get to play as Saejima in part 2 due to how little money you get unless you grabbed every locker key that has gambling cheat items as him or do every substory he has. I’d recommend either doing this during the finale or in premium adventure when all 4 characters have pooled their money and inventory together so you’ll have access to all of their money and gambling cheat items if they had any. You’ll need 600k to get this achievement so you’ll most likely be hitting up gambling minigames and using cheat items in any of the 3 casinos/gambling hall and buying platinum plates to sell at the pawnshop to make a lot of easy money. If you need help finding all the cheat items here’s a link to where/how to get them and what they do https://gamefaqs.gamespot.com/ps4/239456-yakuza-4-remastered...

This guide is for those who want to unlock this in Part 2. It's very easy and quick, but it assumes you have ¥5,000 and you have not already picked up locker key C5 from the drug store with Akiyama. You will need the Zero Jewel that locker contains, or else you'll have to come up with ¥600,000 another way.

Note: If you don't have access to the Dragon Palace yet, complete substory #1 - Dragon Palace Bouncer. The prerequisite to that one is #3 - Brother and Sister 1. So complete those both and you'll have access to the casino.

Save your game now so you can reload afterward and get your money back, and also be able to get the Zero Jewel again on a future character if you think you might want to.

Then, follow these steps:

1. Go to Kotobuki Drugs and pick up locker key C5 off the shelf across from the cashier.
2. Walk right down the street to the Coin Lockers and open it to get your Zero Jewel.
3. Walk to the Dragon Palace on Park Blvd. You can cut north through the Theater Underground or just walk around the block.
4. You should have 300 chips already, which you were given for free when you unlocked the casino (by finishing substory #1 - Dragon Palace Bouncer). If so, you just need to buy 50 more for ¥5,000. You should now have a total of 350 chips. (technically you only need 334 but you can't buy less than 50)
5. Go to the roulette table, press and select your Zero Jewel. Then, bet at least 334 chips on the line in between 0 and 00 for a guaranteed win.
6. You should now have just over 6,000 chips. Go to the counter by the exit and exchange them for 4 Platinum Plates.
7. Go to Ebisu Pawn and sell the 4 plates for a total of ¥600,000.
8. Go up to the rooftops using the staircase a couple doors to the east of the pawn shop. Follow the rooftops north to the small yellow rectangle on the map, which is a weapon shop inside a van.
9. Open the back door of the van, talk to the guy and buy five 9mm Automatic Pistols for ¥600,000.
10. The achievement should immediately unlock, and now you can just press to quit to the title screen and reload your last save to get your money back and it's like nothing ever happened.