- Play as Akuma
At the character selection screen in Arcade mode, highlight Guile, and press Up. At the character selection screen in Training or Versus mode, highlight E. Honda, and press Up.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Throwing is Cheap	Throw your Opponent ten times in a single game.
10 Points
Here Comes A New Challenger	Play 5 Ranked Matches online.
Super Finisher	Get one Super Finish in Arcade Mode.
Sagat's Scar	Overcome Sagat with Ryu's Fierce Shoryuken.
15 Points
Combomaniac	Perform a combo of 7 hits or more.
Blinding Speed	Overcome an opponent in under 15 seconds in single player arcade mode.
20 Points
Vanquish the Computer	Clear Arcade Mode.
SF 20th Anniversary!	Be victorious in 20 Ranked Matches Online.
25 Points
Sheng Long is in Another Castle	Clear Akuma in Arcade Mode.
30 Points
Master of All Things	Be victorious in With Every Character in an Online Ranked Match.
Playing To Be victorious in	Be victorious in 100 Ranked Matches Online.

- Fight against Akuma
Overcome 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.

- Classic character versions
Push [Jab] in Classic Arcade mode to select the current version of one of the following characters. Then, enter the corresponding code as the airplane flies to the top of the screen and press [Jab] again. If you entered the code correctly, you will hear a sound. The classic versions do not have super combos and cannot reduce throw damage.

Classic Ken	Push Left(3), Right.
Classic Vega	Push Left, Right(2), Left.
Classic Sagat	Push Up, Down(3), Up.
Classic Balrog	Push Right, Left(2), Right.
Classic Cammy	Push Up(2), Down(2).
Classic Guile	Push Up, Down(3).
Classic Dee Jay	Push Down(2), Up(2).
Classic Dhalsim	Push Down, Up(3).
Classic T. Hawk	Push Right(2), Left(2).
Classic M. Bison	Push Down, Up(2), Down.
Classic Chun-Li	Push Down(3), Up.
Classic Ryu	Push Right(3), Left.
Classic Blanka	Push Left, Right(3).
Classic Honda	Push Up(3), Down.
Classic Fei Long	Push Left(2), Right(2).
Classic Zangief	Push Left, Right(3).

To fight as Classic Akuma in Classic Arcade mode, highlight the following characters at the character selection screen for approximately three seconds before moving on to the next person: Ryu, T. Hawk, Guile, Cammy, then Ryu again. Then, press Begin + [LP] + [MP] + [HP]. In Classic Arcade Versus/Training mode, highlight the following at the character selection screen: Ryu, the random character box next to Guile, Guile, Sagat, then Ryu again. Then, press Begin + [LP] + [MP] + [HP].