Super Street Fighter 2 Turbo HD Remix - Platform: XBox 360

Play as Akuma:
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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.


Fight against Akuma:
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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.


Classic character versions:
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Press [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 Balrog: Press Right, Left(2), Right. 
  Classic Blanka: Press Left, Right(3). 
  Classic Cammy: Press Up(2), Down(2). 
  Classic Chun-Li: Press Down(3), Up. 
  Classic Dee Jay: Press Down(2), Up(2). 
  Classic Dhalsim: Press Down, Up(3). 
  Classic Fei Long: Press Left(2), Right(2). 
  Classic Guile: Press Up, Down(3). 
  Classic Honda: Press Up(3), Down. 
  Classic Ken: Press Left(3), Right. 
  Classic M. Bison: Press Down, Up(2), Down. 
  Classic Ryu: Press Right(3), Left. 
  Classic Sagat: Press Up, Down(3), Up. 
  Classic T. Hawk: Press Right(2), Left(2). 
  Classic Vega: Press Left, Right(2), Left. 
  Classic Zangief: Press 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 Start + [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 Start + 
[LP] + [MP] + [HP].


Achievements:
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Accomplish the indicated achievement to get the corresponding number of 
Gamerscore points:

  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.