An "Over the Rainbow" badge for Headshot killing a player that is using the Purchased Ten Squad members Rainbow background ?
Backstabbing a player who is using the Combat Knife Only - how about a "sharper edge" badge ?
Killing a player who is using both the Extra Mags attachment And the Fully Loaded Perk - "Not Enough Bullets in the World?"
Headshot kills on a player equipped with the Akimbo 44s and ACOG - - - A "Get a Clue" or "Here's Your Clue" Badge.