[Guild Achievement] City Attacker

Here's a way to VERY easily do the guild achievement [City Attacker].

Group up with as many guildies as you like. We had 10 in my group. Note: It HAS to be guild members.

Every time you kill a Horde in a Horde city, you will get 1x the amount of players in your group. In our case 1x 10 = 10 kills. This would only take 250 kills to reach the 2500 kills required for the achievement.
We had another guildie create a Horde character so speed up the process. Just camped a GY and had him release everytime we killed him.

Enjoy!