KillerKrieg: At this point I have checked so many different versions of the game on youtube, watching people beat him. Kintaro in the gog version does hilariously ridiculous things that he does not do in any other version. He grapples me where I've seen him grapple no one else. I knock him down with a shadow uppercut and he throws me before I can land. FROM A KNOCK DOWN. Hit him with a heavy uppercut and then do the Sub-Zero Ninja slide before he even lands? Don'tcha know he teleports TO HIS FEET just so he can interrupt my slide with a grapple. Oh, and the slide works sometimes, just, y'know. To lure you into a false sense of Security. I have watched tons of different versions of the game in play and he behaves like he does in no other version at all. I have never seen him grapple this much, and seems to chain grapples together sometimes. Grabs you out of mid-air, no problem. Every exploit I have seen for him fails. The only thing that even begins to work is the high punch when he is waking up into jump-kick, but then you've got a problem if you push him into a corner with it. Here comes the grapples.
I am tired of being suplex-citied by this $@*&!#) beast.
The biggest problem with Kintaro on the PC edition is that when you get to Kintaro, it actually changes the difficulty to Medium without your permission (I had it on the original CD version; it also happens if you run into any special characters). On Medium, the game turns into 'Arcade' difficulty, resulting in the infamous 'Walker' characters where they just try to steamroll into you, either blocking your projectiles, or if close enough, just trouncing or throwing you with their own moves.
The real trick is figuring out just how close for them to get before launching a special move and have the AI make the mistake of wandering too close to you so that instead of blocking, they just try to get in close, and end up getting hit by your move instead. It's a touchy thing and requires practice.
However, if you want the absolute cheapest way to do it, pick Kitana. At the sweet spot, the enemy will walk right into the fan lift, and then you can throw fans for a free hit (you might be able to do a flying punch as a follow-up, but it's tricky and risky). This trick works on literally the entire AI, up to and including Kintaro fight. The only thing to watch out for from him once you get the rhythm down is his flying stomp. The best way to deal with that is to just jump backward and kick, but if you're lucky and you're doing the fan lift, sometime you can catch him in it and just repeat your tactic as necessary.
I will say, it helps if you're on freeplay.