The player must be online for this record to be achieved. The k/d ratio is shown at the end of the match and after that by viewing it via the select button while still in the lobby. Any multiplayer mode, maps, and player setup (scorestreaks, perks, guns, etc.) can be used. Any use of known mods, hacks, or glitches that affect gameplay will invalidate the record being attempted. The player may join a match in progress but must finish the match in it's entirety (after the killcam when the scores are shown).