STREET FIGHTER IV

Just use Zangief and keep spamming the triple punch move (spinning lariat) the computer will have no idea what you're doing. Got it in one try.

EDIT: as suggested, changing rounds to 1 and putting the time to 30 seconds helps a lot too, especially with seth, just get a hit or two off him and turtle.

Maybe not a better solution than the one above but if you have a second controller then plug it in, if your going to lose a round simply press start on the 2nd controller

this will take you out of arcade mode and into a versus, finish the match and you go straight back to the match you were just on

just win the arcade mode and use the 2nd controller to avoid any continues and the achievement is yours

To better your chances with this achievement, change the amount of rounds from 3 to 1. This would improve your odds with the harder oppenents like Seth in the later rounds. In medium mode, Seth telegraphs alot of his attacks. If you stay in medium range he will most likely do sonic booms or try to hit you with his Dhalsim stretchy arm attack. You can jump in and punish him with a combo if you predict one of these attacks. Also ANY time his tries his Sweep kick special (when it hits, it's automatically followed by a Chun-Li like flurry kick) and you block it, you can punish him. Stay turtled most of the match and look for these signs, Seth should crumble in no time!