Here's a way to beat the game easily. Anytime, switch to Player 2 and press start. Now select the character you are currently fighting and switch to Player 1 and beat them (without a player 2 controlling). If you do, (because you will) you won't have to fight them. Switch back to Player 2, mash Start and select any character and reapeat the procedure till you get to M. Bison. And there is you go!