You can achieve max rank by simply going for high rounds... If the first few days of this game, in TZit, there was a round skip glitch found... 1 kill, then begin skipping rounds... 1 kill and a 75 round game gave shotguns to all that attempted this glitch... Those that used the squishy gun glitch on DRise, getting past round 75, got shotguns... This is all without regard to your KD, no matter what it is...
Play a game past round 75, and you'll get your rank... KD doesn't mean ****...