PvP quests are currently bugged : the kills on guildies and allies are counted.
You should go to Shoal get them (kill 3 humans, then 3 mirdain then 2 orks + 2 mahirim + 2 dwarves), that's 400 gold to get easily.

[Linked Image from w3.the-kgb.com][Linked Image from w3.the-kgb.com]