Yakuza 3 Remastered

Ah yes, the return of Climax battles from Y0 and YK. This time however, they are slightly simpler than in the previous two titles I mentioned. These are bonus short battles that usually require you to do a certain fighting related thing, and sometimes under a certain time restraint. Such as defeat every enemy or chase down mack etc. They are available once you complete the games story. Some of the ultimate ones will unlock as you complete the previous ones. There are various levels of power which kiryu has in these, dependent on the match. The most powerful being Legendary Dragon, having maxed out stats, and the weakest being Masked Dragon, a barebones lv.1 kiryu. This achievement only requires you to play every Ultimate Match, in order to do so you have to get all the way so you have Ultimate Skill 5 unlocked and have at least attempted it. Some are pretty grueling but overall they are easier than the ones encountered in previous games.
Here is a link to a great page that will run down each and every match, the specifics, and strategy to use, also there’s a video link a little farther down the page:

https://gamefaqs.gamespot.com/ps4/239455-yakuza-3-remastered...

All credit to CyricZ for the guide. I also recommend the rest of his guide as well if you need help with something in the game.

If you want a video version running down each one melee through ultimate skill, here’s one. It’s long, but one of the top comments has timestamps:


ULTIMATE SKILL:
The hardest and most grueling due to many factors like time and challenge are the ultimate matches. These are all the boss fights from the main story and IF7. You must beat every boss chronologically and you regain a little bit of health after each one. The later ones can go for almost 30 minutes so make sure you have free time and patience because once you fail, you’ll start straight from the beginning. The best help is to know each bosses patterns and when they become vulnerable. The best attack to generally use against bosses is (X) (X) (X) (Y), this one has kiryu finish his strikes with a heavy overhead double axe handle, this will almost always break the block and do a bit of damage, in some cases it may knock them on the ground. However, it depends on each boss on what the approach is. Also always use the hells gauntlet heat finish, it does the most damage. Final tips I have for ultimate matches are to use Tiger Drop (RB + Y) and Tiger Parry (RB +B) and to seldom use heat actions because they do little damage and take away from ur damage factor.

Here’s a video by Devilleon of him running down Ultimate Match 5:

This is intended to compliment TheAirness' general guide, I wanted to give more specific information in regards to some of the Ultimate matches which may not perhaps be available on the video posted. Hopefully this may also help people who want to get S rank on all for the War God Talisman accessory. I've also included a little tip for Ultimate Mack in Challenge Match 9 at the end.

Ultimate Match 2 -
Kanda
Firstly, remember that you start with 3 weapons in your inventory. As soon as the first fight against Kanda begins, get out your Kali Sticks and start attacking. Just don't stop, the standard Kali Stick combo appears to stop you from being stunned, which is Kanda's whole deal. Even if he manages to grab a bar stool, just keep attacking. In no time, you'll get to the first cutscene where he pulls the decoration off the wall. Make sure to do the QTE to dodge and gain heat, then go back to being unarmed. Make sure you have at least blue heat active (You can back off and hold RT for more heat if you don't quite have enough.) and wait for him to swing the large object at you. You should get a Heat prompt as he does which will activate Essence of Self Destruction, this will cause him damage and instantly destroy the object. After this he'll hunch and stop attacking, do a XXXYY combo, two if you can. This will make him pull the second one off the wall, do exactly the same again with that one for more easy damage. At this point, a single punch should be enough to put him into the finishing move, it probably won't quite finish him but if it doesn't don't worry because you will immediately go into the crazy "throw him onto the bed" event that'll completely destroy him.

Majima
Pull out your Tonfa and just keep attacking. The Tonfa you are given doesn't appear to lose durability unless you use it to do a heat move or block, and it has a very high durability as well so you can basically treat it like it has infinite durability. Just keep attacking with it doing just the standard combo, no strategy required. Majima will block a huge amount of course, but it doesn't matter. Just keep going, you will win with minimal damage. The only thing I would suggest is to use any heat you gain to stomp him or use the tonfa special.

Richardson
After the last two matches, he's really surprisingly easy. You'll want to be behind him as much as possible, so dodge early and dodge often. You'll find he will very often end up firing in completely the wrong direction for ages with his dual pistols, giving you plenty of time to pull out the faithful XXXYY combo. Juggle him whenever you can and he'll go down quick. The shotgun he pulls out is a little more tricky and it can knock you down, but it doesn't do as much damage as you'd think so just be really aggressive. You can try hiding somewhere in the room if you don't want to face a particular weapon, he will often change weapons when left alone. His rising kick can also be a tricky one, but as long as you dodge early he'll probably miss and thankfully it doesn't do much damage either. There are also heaps of items around the room you could hit him with, but be wary of using them as the AI will usually knock them straight out of your hands if it can.

Mine
Here we go. Definitely the most difficult, but hopefully using the above tactics you'll get to him with plenty of health. I've seen it mentioned that the nunchaku work well against him, but it doesn't work for me at all so i'd suggest sticking with being unarmed. This fight is all about keeping an eye on his heat levels. When he's in normal mode, just be aggressive and use good old XXXYY to deal damage, hopefully you'll knock him down and can occasionally use a heat-stomp on him. If he glows blue he doesn't seem too much more difficult, I suggest just keeping up the attack on him. When glowing orange he seems much more capable, you can continue to attack if you feel confident but he will be much quicker to react and will hit harder so be careful. You'll probably want to think much more about blocking or dodging here. Once he goes into red mode, immediately stop attacking! Don't focus on him with RB either, just break away completely and repeatedly roll around the area with AA to dodge-roll his crazy fast attacks. His range is huge as well so don't think you're safe to merely run away. After some time, he'll go back into normal mode and you can resume attacking. Bear in mind that once red mode ends the first time you'll be put into a QTE, be successful on this and you'll do some damage plus get some heat. Unfortunately it won't happen again the next time he ends red mode so make the most of it. Be patient and you should be able to bring him down. If you find you're getting hurt a lot, then don't attack him at any time other than when he's in normal mode to hopefully cut down the damage.

Ultimate Match 3
I found this one incredibly difficult, although I don't see many complaints online about this one so maybe it's just me. Remember that this is VR mode and you can't use heat actions at all. Anyway, here's what worked for me:
Lau Ka Long x 3
Straight into the deep end on this one. Bear in mind that damage is shared between all three of them, so you don't need to focus on one over the others. Unfortunately, this also means you're stuck fighting all three of them through the whole thing. Try to keep moving, they like to gang up on you if they get too much of a chance and they will likely stun-lock you for a while. If you run away from the group, you can bait the unarmed and claw ones into doing a weird flying kick which can be Tiger Dropped. I managed it a few times but wasn't particularly good due to the odd angle they come at you, but if you're an expert with Tiger Drop then this will end the fight very quickly. If you're like me and can't pull it off, then start throwing. A lot. If you can throw one into the others all the better, the shared damage makes this very effective. You'll no doubt be interrupted when trying to throw, but keep trying. If you can get one alone for a second it can give you a chance for an easy throw. Watch out for the spear one, the long range can catch you out. Try to throw each one of them in turn if you can, they will automatically counter your throw if you attempt to throw the same one twice quickly.
Joji Kazama
Throws also work pretty well against Joji. Keep an eye out for when he changes his fighting pose, it means he'll counter any normal punch or kick against him but throws will still work fine. Also, when he does his body switching thing, wait for a second or so then go for a throw. However, do it really slowly, by the time you actually complete the throw your bodies will have switched back and the damage will count. It'll also save you from having to avoid attacks while switched. Other than these two things, there isn't a huge amount of strategy to Joji, and if you've gotten this far you clearly know what you're doing!
Kazuma Kiryu
Really hard (unsurprisingly) but more for the time limit than anything else. I was unable to get anywhere near beating him without being able to land a few Tiger Drops. There isn't even really much else you can do against him other than tiny bits of damage here and there. Irritatingly, the long QTE won't finish him either, and you'll likely be racing for that last bit of damage. You just really, really need to land that Tiger Drop.

Ultimate Match 5
A lot of the harder ones will have been covered in Ultimate Match 2, so you should be ok with those ones now! Thankfully you are equipped with the same weapons as you were in UM2 as well so the same tactics work here. Remember that you automatically get S rank just for getting though this, so take as long as you want and don't worry if one fight takes a fair amount of health from you as you will partially heal each fight.
I won't cover all fights, a lot of them should be pretty easy. A few fights which could be tricky which you didn't do in UM2:
Lau Ka Long
This is the normal version of the boss, where you fight just one form at a time which should make it a lot easier than the triple-threat in UM4. You can put some distance between you to build heat, which will allow you to use some of the items at the edge for good effect, but you can afford to be aggressive here and shouldn't come away too badly. The claw form thankfully goes down very quickly.
Joji Kazama
This will also be the regular version rather than the body-swapping VR guy, and is ridiculously easier as a result. Having access to heat moves makes a massive difference here. He loves to counter, but rarely attacks so just spend time filling your heat with RT then either use one of the chairs to do a heat action or do Essence of Rolling by rolling towards him with AA and mashing Y. Repeat!

Be warned, despite what you may think, Mine is not the final fight in this challenge, you'll also do the fights from Ultimate Match 4 as well. They aren't too difficult, but just be ready for them. Remember that you still have the weapons equipped if you need them. I found the Tonfa useful against Kamiyama, just be really aggressive as you were with Majima.
Special mention goes to:
Komaki
This guy can be completely impossible or laughably easy depending on your approach. If you try to attack him he will go completely berserk and will likely put you on the floor in seconds. The trick is to do the same thing you can do against Joji - spend time building heat with RT, he'll almost never try to stop you (and if he does it's minimal damage) then do an Essence of Rolling to damage him. Keep doing this until he goes down!

Extra Special Non-fighting Mention
I also have to mention the horror of Ultimate Mack in Challenge Match 9 - he's so, so difficult. You'll probably have already checked out CyricZ's guide for a few tips (once again - https://gamefaqs.gamespot.com/ps4/239455-yakuza-3-remastered...), but one thing that really gave me issues was that Kiryu would randomly stop sprinting at points, ruining the attempt. I found that by fully holding forward on the left stick and steering with the right stick, this was greatly reduced. If you have the same issue then give this a try (and good luck!)
(Also, don't be an idiot on Challenge Match 1 and attempt it without thinking to press RT. Yeah.)