So, I've been playing zombies since the midnight release, and couldn't get a better emblem than the skull with blue eyes. After reading everyones best guesses on how the ranking system works, I created a new character and started experimenting. I am currently at 20000K with 29D and .9 accuracy, and have had the shotguns for a couple of days now. I don't know how it all adds up, but I Had the knife in one week and the shotguns in two. This is how: custom game, EASY, survival, town. Yes, playing on easy counts toward your rank. Just make sure you're playing "online". survival in the town has everything you need, including a mystery box and a pack-a-punch. To keep your accuracy up, use a lot of "one shot kill" guns and use the auto aim. The upgraded python is my favorite. Finally, be a quitter. You can quit at any time without it counting as a death. So, 5 games with 200 kills and no deaths equals some nice stats. That's my story. Hope it helps.