Unlock the first six unlockable characters by beating arcade mode with these 6 fighters
Ryu = unlocks Sakura
Sakura = unlocks Dan
C. Viper = unlocks Cammy
Chun-Li = unlocks Gen
Abel = unlocks Fei-Long
M.Bison = unlocks Rose
Then beat the game 1 more time with a character you already beat the arcade mode with by achieving at least 1 perfect and no continues to unlock Akuma (this is best done on the Easiest setting).
Then beat arcade mode with Akuma.
Then to Unlock Gouken and defeat him on Hardest difficulty:
Set difficulty to HARDEST, 1 round, 99 seconds (99 seconds gives you enough time to fill up your meters and adds bonus points to your score which is required to fight Gouken).
Pick Zangief and use the spam the LB button (LP,MP,HP) helicopter move technique. This makes it much easier to achieve the following stipulations. Use your favorite fighter if you prefer.
You need to achieve:
- Play with any characters with which you watched the ending once (so play using a character you have already beaten the game with)
- Do not continue at all.
- Do not lose at all. Not even one round (easier if you only play 1-round matches or use controller 2 to interrupt the a fight if you are about to lose)
- Achieve certain number (or more) of "Perfect" rounds. The number of Perfect Win you need to achieve are:
If you play on
- 1 round match: 1 time or more
- 3 round match: 2 times or more
- 5 round match: 3 times or more
- 7 round match: 4 times or more
- Achieve a certain number (or more) of Super Combo -OR- Ultra Combo Finishes. Super and Ultra finishes both count toward this number. The number of super/ultra finishes you need to achieve are:
If you play on
- 1 round match: 3 times or more
- 3 round match: 5 times or more
- 5 round match: 7 times or more
- 7 round match: 9 times or more
- Achieve certain number (or more) of First Attack (this means you must score the first strike in a match--the screen gives you the "First Attack" message, and you can mostly do this without even noticing):
The number of First Attack you need to achieve are:
If you play on
- 1 round match: 5 times or more
- 3 round match: 10 times or more
- 5 round match: 15 times or more
- 7 round match: 20 times or more
- Then Gouken will appear.
After you defeat Seth you will fight Gouken. Beat him to get your achievement and unlock Gouken as a playable character.