for (CompletedAchievementMap::const_iterator itr = m_completedAchievements.begin(); itr != m_completedAchievements.end(); ++itr)
    if (AchievementEntry const* completedAchievements = sAchievementMgr->GetAchievement(itr->first))
        if ((completedAchievements->Faction == ACHIEVEMENT_FACTION_HORDE    && GetPlayer()->GetOTeam() != HORDE) ||
            (completedAchievements->Faction == ACHIEVEMENT_FACTION_ALLIANCE && GetPlayer()->GetOTeam() != ALLIANCE))
                DeleteAchievement(completedAchievements);