Art of Fighting (Neo*Geo)
CheatingDome.com
Unlock Mr. Big
Get to Mr. Big in one player mode and purposefully lose the match. Restart the game and Mr. Big will now be unlocked in two player mode.
Unlock Mr. Karate
Get to Mr. Karate in one player mode and purposefully lose the match. Restart the game and Mr. Karate will now be unlocked in two player mode.