Hey,
So, me and a buddy worked on all the online achievements but we could not unlock the "lights out" achievement despite each of us doing facebreaker KO's in under 10 seconds.  What gives with this, are we doing something wrong??

Thanks for the help.
jpm5150

I read this in another post so I take no credit for this. But heres what you have to do. Start a facebreaker on a friend or easy opponent. (Romeo and kenko were easiest for me.) You do your first hit, then second, and then it says hit him again for a facebreaker. Do not perform the facebreaker, you have to do this three times and the achievement is yours. I think the achievement is meant to say you have to KO someone in under a min. And I've found the above technique the easiest. Good luck

go and do a single fight. When selecting your character you should be able to hit Y to change options. Make it 1 knockdown. Then select your character and an easy computer character. Level on easy and just start hitting the guy until he's knocked down.