Killer Instinct

To get this and all other "Friendly..." achievements in KI, you will need to host an exhibition match, invite a person from your friends list and beat them with the appropriate character (in this case, Fulgore).

Note this will not work if your friend hosts the match.

Also note that you can get these achievements with a character in "free rotation" -- you do not need to own them.

All the "friendly" achievements are currently bugged in a good way; you need only finish an exhibition match vs. anyone. Win or Lose, the achievement will unlock at the end of the match, unless your opponent disconnects. It doesn't matter who hosts the match.

So jump into exhibition matches, pick Fulgore, finish the match, and then pick "select character" so you can get another friendly achievement. No friends or skills required.

This will take two people, and you'll need to buy Fulgore.