STREET FIGHTER IV
48 Achievements
1,000
80-100h
EX-cellent Master
Perform 100 EX Special Moves.
20
How to unlock the EX-cellent Master achievement in STREET FIGHTER IV - Definitive Guide
Your character will glow in yellow if you succeded (source). And the Hadoken will blue yellow instead of blue.
Do use an EX move, you must first fill up at least one section of the Super Meter. Then input the command for one of your character's special moves, and instead of just hitting a single attack button, it's easiest to just use the LB or LT for "ALL" as the final button press. The move should be more powerful than a regular one (I.E. C. Viper's Flame Kick will add a roll for extra hits in then air before the kick). Simply do this 100 times to get the achievement. It should come just in playing the game as long as you remember to use them.
To perform an EX Special move, you have to more than one Punch/Kick button when performing a special move. As long as you have one bar in your EX gauge, you can perform an EX move. If you are having trouble pulling off EX moves, hit / instead. You will know if you've done an EX move as your character will begin flashing yellow.
EX Special Moves are performed the same way you do a special move, except you'll have to press two of the same type of attack buttons at the same time. This will also drain 1 EX bar each time you perform these moves.
Example of Ryu's EX's:
EX Senpukyaku - + (or instead of pressing , it can be any kick button)
EX Hadoken - + (or instead of pressing , it can be any punch button)