read the complete details here - http://j.gs/1010114/sf4-unlock-characters
There is no way to unlock the arcade version of Akuma.
When you unlock "Akuma" you have to compleate it with "Akuma" to get "Gouken" :)
read the complete details here - http://j.gs/1010114/sf4-unlock-characters
Zero's a mega man character you can't unlock him in any street fighter game!
You cannot unlock Oni.
Well Capcom never officially and directly tell us, but there are many hints. Like in Street Fighter 4 ending of Akuma and a mini rival conversation where he (Akuma) said "Prepare to meet your maker."
Either 'cause you didn't unlock her or you got the ORIGINAL Street Fighter 4. Other than that, she should be there.
YOU SIR... ARE A DIM$#!7 TO SAY SOMETHING LIKE THAT ABOUT THE MOST EPIC CHARACTER IN THE CAST (Next to Akuma....)!
I believe they are available from the start. I think you have to buy them... otherwise it depends onwhere you get it...
read the complete details here - http://j.gs/1010114/sf4-unlock-characters
Super Street Fighter 4 is basically the same game as Street Fighter 4. SSF4 features everything SF4 had, with more modes, moves, and characters. Super Street 4 will tweak some minor things, but by no means is this a different game than Street Fighter 4.
Super street fighter 4 comes out on April 27th