I bet that the Japanese are incapable of pronouncing any words that end with a consonant, so they like to add vowel sounds at the end, like "Fight-o". At least that's the way it seems to me. They need to scrap the language altogether and just use English, as it is way better.
Black Tiger, the codes still do not work. I used .SD which is supposed to do everything. Select + any direction does nothing at all.
Okay... after discovering that my Turbo-CD Fighting Street is severely scratched I fired up the PC Engine version. My foggy memory led me to believe that you might need to place in the top three or something, so I played until I got first place.
Ironically, the trick to getting a high score quickly is pulling of special moves, they give you like 5000 points or something.
Anyways, I put in .LK which I thought was supposed to unlock only 'easy special moves' and tried another fight. I couldn't get it to work either.
Then all of a sudden I had a brainstorm and remembered where I kept the tattered half page of UGC tricks. It only lists the .SD initials, but the key element is that after entering in the initials, there's a code to press at the title screen.
I now remember that this was why I first hung onto this scrap of paper. Because I always saw the trick misprinted in magazines.
Anyways, at the title(wall punching) screen press these all at once:
Left + I + II + Select. If done correctly you're credits will jump from 3 to 7.
.LK only opened up the stage select feature and I quickly got killed trying to use Select for special moves against Saggat.
There's also a trick here saying to press I or II and RUN 'back and forth'. It says you'll 'get hurt less' because pausing resets the opponent's moves.