Originally Posted by Killbomb
Don't think you can boost in ranked matches for the achievement to get to 1st Dan. It only takes around 10 wins to get to 1st Dan anyway. If you're having trouble give it a few days until all the better players have moved up in the ranks. Also, before you search, choose the option to only play people +/- 3 ranks.
You can also keep playing and you'll eventually get to 1st dan. I was 4-26 when i got it (I suck at fighting games, but I love them so much, lol).