These are the directions to easily do the guild achievement City Attacker.
Group up with all guild members that will participate.
Every time you kill a Horde in a Horde city , or Alliance in Alliance city, you will get 1x kills for the amount of players in your group. In our case 1x 10 Guild Members = 10 kills. This would only take 250 kills to reach the 2500 kills required for the achievement.
We had two guild members create an Alliance character to speed up the process. We just camped a Grave Yard and had them release every time we killed them.
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