Great piece of Info(:
Hope you get a sticky

Heh wrote Great piece of Info(:
Hope you get a sticky

Thanks, for the feedback.

Hello,

I recently reached zombie rank: shotguns
Here are my stats:
Kills: 17993 Headshots: 6328
Fired: 76287 Deaths: 30
Downs: 75 Gibs: 14058
Revives: 252 Perks: 257
Grenade: 569 Doors: 102
Hits: 123715 Traveled: 106
Highest Round: 33 Avg.Round: Twenties
-It took me one week to get shotguns. My KD is 220+.
-I think your rank is determined by; total kills, k/downs, k/deaths, accuracy, and possibly average round(but I've played plenty of low rounds vs high rounds so I dont think your rounds mean much)

This guide is AMAZING it helped me so much!
#Sticky this post

I have put together more pieces and this is what I have found:
Your KD is essentially the main factor, but depending on your Total Kills your KD can vary. I have seen several shotguns with 100,000's of Total Kills and their KD ranged from 90-150. Accuracy ranged from 1.0 to 2.0, but does not seem to change rank much since you would need to train more often to increase hits/fired(accuracy).
Now, for everyone saying high rounds also manipulate rank. It does not. Because as the rounds increase, so does the health and number of zombies per round. Since it is possible to be promoted to shotguns in solo; revives, doors, perks, miles traveled, gibs, etc factor your rank much less then KD and total kill. Either that or some(not specified) may not factor rank at all.

If anyone is still on top of How the Ranking System works, it would be helpful if someone contributed with playing only grief(see if grief matters) and never co-op/solo.
Also, to check that KD/Total Kills are the main factors by playing zombies for a while without shooting/killing.

The the knife is not accurate. I got my Knife and Skull once I hit 100K/D I remember because I was playing Buried I had a 99 K/D then I got 3000 Kills that game which got me my Skull. Right now my K/D is 130

Great Thread, Cleared a lot up For Me
-WorldLeader

This deserves to be stickied

EmoTallica wrote The the knife is not accurate. I got my Knife and Skull once I hit 100K/D I remember because I was playing Buried I had a 99 K/D then I got 3000 Kills that game which got me my Skull. Right now my K/D is 130

The way this thread described how the ranking system works is the most accurate one I have seen/heard about so far. @EmoTallica, if you post your stats for story(co-op/grief combined or leaderboards) and co-op, I will gladly help out.
If its too much, co-op alone is fine.

Thanks man this really helped answered lots of questions