Akuma:
At the select your character screen, press U, R1, D, L2, R, L1, L, R2

Options During the game, pause and press select to bring up a small options 
menu.

Supers Moves:
Guile: Double Sonic Boom- B(charge) F+2 punches
Thrust Flash Kick- D(charge) U+2 kicks

Cammy: Flaming Cannon Uppercut- F, D, DF+2 kicks
Blue Cannon Drill- D, DF, F+2 kicks

Sawada: Super Gokusatsu-jibakujin- F, DF, D, DB, B+2 punches
Super Sawada Special- D, DF, F+2 kicks (3times)
Shadow Punches- D, DF, F+2 punches

Chun-Li: Super Spinning Bird Kick Combo- B(charge) F+2 kicks
Red Kiko-Ken- B(charge) F+2 punches

E. Honda: Shadow Super-Zutsuki- B(charge) F+2 punches
Power Oicho-Nage- F, DF, D, DB, B+2 punches(Close)

Balrog: Shadow Dash Straight- B(charge) F+2 punches
Aura Buffalo Head Butt- D(charge) U+2 punches

Ryu: Dashing Uppercut- F, D, DF+2 punches
Double Fireball- D, DF, F+2 punches
Shadow-Juggle Hurricane- D, DB, B+2 kicks (then F, or B to move)

Ken: same as Ryu

Akuma: Same as Ryu, but no charging Uppercut

Blanka: Destructive roll- B(charge) F+2 punches
Destructive vertical Roll- D(charge) U+2 punches

Vega: Shadow rolling slash- B(charge) F+2 punches
Mega Sky-High Claw- D(charge) U+2 punches, then P

Zangief: New Punishing Flattener- F, DF, D+2 punches

Dee Jay: Shadow Machine Gun Uppercut (it juggles)- D(charge) U+2 punches
Double Air Slasher-- B(charge) F+2 punches

Sagat: Charging Tiger Uppercut- F, D, DF+2 punches
Double High Tiger Shot- D, DF, F+2 punches
Double Low Tiger Shot- D, DF, F+2 punches

Bison: Super Knee Press- B(charge) F+2 kicks
Shadow Head Press- D(charge) U+2 kicks