In Classic Arcade mode, press jab to select a character. Then, as the airplane flies to the top of the screen press the corresponding sequences of buttons and press jab again to unlock the following Classic characters:
CLASSIC CHARACTER - HOW TO UNLOCK Balrog - RIGHT, LEFT, LEFT, RIGHT. Blanka - LEFT, RIGHT, RIGHT, RIGHT. Cammy - UP, UP, DOWN, DOWN. Chun-Li - DOWN, DOWN, DOWN, UP. Dee Jay - DOWN, DOWN, UP, UP. Dhalsim - DOWN, UP, UP, UP. E. Honda - UP, UP, UP, DOWN. Fei Long - LEFT, LEFT, RIGHT, RIGHT. Guile - UP, DOWN, DOWN, DOWN. Ken - LEFT, LEFT, LEFT, RIGHT. M. Bison - DOWN, UP, UP, DOWN. Ryu - RIGHT, RIGHT, RIGHT, LEFT. Sagat - UP, DOWN, DOWN, DOWN. T. Hawk - RIGHT, RIGHT, LEFT, LEFT. Vega - LEFT, RIGHT, RIGHT, LEFT. Zangief - LEFT, RIGHT, RIGHT, RIGHT.
ACHIEVEMENT - HOW TO UNLOCK Vanquish the Computer (20 points) - Beat Arcade Mode. Sheng Long is in Another Castle (25 points) - Beat Akuma in Arcade Mode. Here Comes A New Challenger (10 points) - Play 5 Ranked Matches online. SF 20th Anniversary! (20 points) - Win 20 Ranked Matches Online. Playing To Win (30 points) - Win 100 Ranked Matches Online. Master of All Things (30 points) - Win With Every Character in an Online Ranked Match. Training for Perfection (10 points) - 5 Perfect Rounds in Arcade Mode (Any Difficulty Level, no challengers) Throwing is Cheap (5 points) - Throw your Opponent ten times in a single game. Super Finisher (10 points) - Get one Super Finish in Arcade Mode. Blinding Speed (15 points) - Defeat an opponent in under 15 seconds in single player arcade mode. Combomaniac (15 points) - Perform a combo of 7 hits or more. Sagat's Scar (10 points) - Defeat Sagat with Ryu's Fierce Shoryuken.
To play as Akuma, defeat all fighters leading up to M. Bison without continuing in under 20 minutes. When you battle Bison, Akuma will appear. After Akuma appears, highlight Guile on the Arcade Mode's character select screen and press "Up" to select Akuma. To select Akuma in Vs. Mode you must choose E. Honda and press "Up" to select Akuma. To select Akuma in Classic Mode or Training Mode Classic, highlight Ryu and simultaneously press LP+MP+HP+Start.
To play as Akuma in Classic mode, highlight these characters in the following order and wait 2 seconds: Ryu, T. Hawk, Guile, Cammy, and Ryu again. Press Start and all three punch buttons in quick succession. Akuma's portrait will replace Ryu's if done correctly.
Defeat all opponents before reaching M. Bison in less than twenty minutes without using any continues. When you fight M. Bison, Akuma will appear, perform the Shun Goku Satsu on Bison, then fight your character.