The easiest way to reach this is to go into Treasure Battle as Akuma and never stop throwing fireballs. To make it even easier, fireball is one of the four assist moves in his moveset! For whatever reason, the AI simple cannot figure out how to sidestep fireballs and you will end up winning match after match, very rarely missing a Perfect.
P.S. You can do this all the way up to Tekken God Prime, that's how bad the AI is.