He Made a new NPC typ "ZombieNPC" if you could add this that would be grate. also if this is something I could do my self like in the data file, how?

you can add it here in the code

        private void GetAllKillables()
        {
            AllObjectives[QuestType.Kill] = new List<string>
            {
                "bear",
                "boar",
                "bradleyapc",
                "chicken",
                "horse",
                "stag",
                "wolf",
                "autoturret_deployed",
                "patrolhelicopter",
                "player",
                "scientist",
                "murderer",
                "tunneldweller",
                "underwaterdweller",
                "scarecrow",
                "simpleshark"
            };
            DisplayNames.Add("bear", "Bear");
            DisplayNames.Add("boar", "Boar");
            DisplayNames.Add("bradleyapc", "BradleyAPC");
            DisplayNames.Add("chicken", "Chicken");
            DisplayNames.Add("horse", "Horse");
            DisplayNames.Add("stag", "Stag");
            DisplayNames.Add("wolf", "Wolf");
            DisplayNames.Add("autoturret_deployed", "Auto-Turret");
            DisplayNames.Add("patrolhelicopter", "Helicopter");
            DisplayNames.Add("player", "Player");
            DisplayNames.Add("scientist", "Scientist");
            DisplayNames.Add("murderer", "Murderer");
            DisplayNames.Add("tunneldweller", "Tunneldweller");
            DisplayNames.Add("underwaterdweller", "Underwater Dweller");
            DisplayNames.Add("scarecrow", "Scarecrow");
            DisplayNames.Add("simpleshark", "Shark");
        }

        #endregion

XNeo

you can add it here in the code

        private void GetAllKillables()
        {
            AllObjectives[QuestType.Kill] = new List<string>
            {
                "bear",
                "boar",
                "bradleyapc",
                "chicken",
                "horse",
                "stag",
                "wolf",
                "autoturret_deployed",
                "patrolhelicopter",
                "player",
                "scientist",
                "murderer",
                "tunneldweller",
                "underwaterdweller",
                "scarecrow",
                "simpleshark"
            };
            DisplayNames.Add("bear", "Bear");
            DisplayNames.Add("boar", "Boar");
            DisplayNames.Add("bradleyapc", "BradleyAPC");
            DisplayNames.Add("chicken", "Chicken");
            DisplayNames.Add("horse", "Horse");
            DisplayNames.Add("stag", "Stag");
            DisplayNames.Add("wolf", "Wolf");
            DisplayNames.Add("autoturret_deployed", "Auto-Turret");
            DisplayNames.Add("patrolhelicopter", "Helicopter");
            DisplayNames.Add("player", "Player");
            DisplayNames.Add("scientist", "Scientist");
            DisplayNames.Add("murderer", "Murderer");
            DisplayNames.Add("tunneldweller", "Tunneldweller");
            DisplayNames.Add("underwaterdweller", "Underwater Dweller");
            DisplayNames.Add("scarecrow", "Scarecrow");
            DisplayNames.Add("simpleshark", "Shark");
        }

        #endregion

hi, i tried to do this: 

}

        private void GetAllKillables()
        {
            AllObjectives[QuestType.Kill] = new List<string>
            {
                "bear",
                "boar",
                "bradleyapc",
                "chicken",
                "horse",
                "stag",
                "wolf",
                "autoturret_deployed",
                "patrolhelicopter",
                "player",
                "scientist",
                "murderer",
                "tunneldweller",
                "underwaterdweller",
                "scarecrow",
				"ZombieNPC",
                "simpleshark"
            };
            DisplayNames.Add("bear", "Bear");
            DisplayNames.Add("boar", "Boar");
            DisplayNames.Add("bradleyapc", "BradleyAPC");
            DisplayNames.Add("chicken", "Chicken");
            DisplayNames.Add("horse", "Horse");
            DisplayNames.Add("stag", "Stag");
            DisplayNames.Add("wolf", "Wolf");
            DisplayNames.Add("autoturret_deployed", "Auto-Turret");
            DisplayNames.Add("patrolhelicopter", "Helicopter");
            DisplayNames.Add("player", "Player");
            DisplayNames.Add("scientist", "Scientist");
            DisplayNames.Add("murderer", "Murderer");
            DisplayNames.Add("tunneldweller", "Tunneldweller");
            DisplayNames.Add("underwaterdweller", "Underwater Dweller");
            DisplayNames.Add("scarecrow", "Scarecrow");
			DisplayNames.Add("ZombieNPC", "ZombieNPC");
            DisplayNames.Add("simpleshark", "Shark");
        }

        #endregion

but everytime a zombie horde is killed, it's not credited to the quest. 

please help :(