also, for akuma, u gotta get 1 perfect no more no less, and a ultra finisher use whatever toon u want, AFTER u unlock all the reg ones first, no continues.
GETTING GOUKEN:
YOU CAN't USE A CONTINUE
BEAT ARCADE WITH AKUMA FIRST
Then Chose your best character again, preferably
MATCH 1: Get a Perfect
MATCH 2: Get a Perfect
MATCH 3: End the match with a ULTRA COMBO (don't get a perfect)
MATCH 4: End the match with a ULTRA COMBO (don't get a perfect)
MATCH 5-8: Make sure you don't get a perfect, get hit atleast once, and DON"T FINISH WITH A ULTRA OR ANY SUPER COMBO. Kill with a regular move, or haduken, etc. just to be safe
MATCH 9: You will face Gouken after Seth and you must beat him.
this is just one of the versions i've read and it worked, except i got 3 ultra combo's finishers instead of 2 still worked so whatever.
theres a bunch posted about how two get both guys, shits confusing all i know is i got it haha so whatever.