Some people like >+LB, I find that it didn’t connect as easily and the opponent usually blocked it. When I refer to the ‘chain’ it’s herein referring to this method. The first four or so characters are easily defeated using the 'Earthquake spamming method' (DOWN on the D-pad/analog stick + LB + ). I found this achievement tough because of the AI getting harder and smarter the farther you get, not being able to lose a round ( you CANNOT save yourself from a loss with a second controller), and fighting the opponents in a random order each time: you can’t preordain the order a la Street Fighter II HF…

I will share my personal experience and provide what little tips I can, as I feel there isn't a whole lot of information about this game. According to another achievement website, some gamers have earned this with relative ease others have had multiple trials without success. This is not (necessarily) an easy achievement. While this will help, the game (as with many 'old school' games) will still present a challenge. To start: Make sure to set the game difficult to EASY.

Game samurai shodown 2