Go to Arcade mode. If you lose to your rival character (if you wanted I-ISM pluses), drop the continue numbers to 0 very fast. You will get a game over with a "Try Again" in the middle. When you move the D-pad the buttons are glitched. If you want to cancel it, you can press Home to get out of the game or turn the power off.
Unlock the following characters by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK EX-M.Bison - Complete Arcade mode. Then at the character selection screen, highlight M.Bison and hold Select while choosing him. Final-Vega - Complete Arcade mode. Then at the character selection screen, highlight Vega and hold Select while choosing him. original Chun-Li - At the character selection screen, highlight Chun-Li and hold Select while choosing her. Then, choose X-ism to play as Chun-Li in her Street Fighter II costume. Shin Akuma (Gouki) - Complete Arcade mode with Evil Ryu. Then at the character selection screen, highlight Akuma (Gouki) and hold Select while choosing him.
Complete 100 Kumite mode with a perfect score. Then while selecting the option for R. Dramatic Battle mode, hold L + R + SELECT. Then, choose a world tour character. In this mode, the CPU has unlimited specials. Complete this mode to unlock unlimited auto-guard Isms.
-Select a World Tour or Entry Mode character. Then, complete any mode that allows an Entry Mode character to be played without using any continues.
-Complete World Tour mode, save the game, and register your World Tour character in Entry mode. Then, unlock the following ISM Plus upgrades by completing the corresponding mode while using that character:
ISM PLUS - MODE Alpha Power - Complete Survival Arcade mode with a World Tour character. Custom Combo Charger - Complete R. Dramatic mode with a World Tour character. Multiple Taunt - Complete Final Battle mode with a World Tour character. Status Plus - Complete Arcade mode with a World Tour character. Supreme Alpha Power - Complete Survival Boss mode with a World Tour character.
Go to the "Button Configuration" screen at the options menu. Then, go down to "Select" and "Taunt" should appear next to it. Press Right until it reads "S.COMBO1 LVL1". The number after "S.COMBO" corresponds to what super combo you want to use. The number after the "LVL" represents what level you want the move to be. For example, to have Ryu use his Shinkuu-hadouken at the highest level, scroll until it reads "S.COMBO1 LVL3". This can also be done from the pause menu.