under "if (special != null) {
					maximumAccuracy *= special.getAccuracy();
					maximumDamage *= special.getDamageModifier();
				}

				switch (defender.npcType) {"

Add

case VorkathConstants.ZOMBIE_SPAWN:
					if (attacker.getCombat().crumbleUndead()) {
						attacker.sendMessage("Crumble undead kills the zombie instantly.");
						damage = 30;
						defender.isDead = true;
					}
					break;
---

under
NPC npc = NPCHandler.npcs[i];
		//System.err.println(npc.getName());
		Optional<Task> task = SlayerMaster.get(npc.getName().replaceAll("_", " "));
		if (task.isPresent()) {
			int level = task.get().getLevel();
			if (c.playerLevel[Skill.SLAYER.getId()] < task.get().getLevel()) {
				c.sendMessage("You need a slayer level of " + level + " to attack this npc.");
				c.getCombat().resetPlayerAttack();
				return;
			}
		}

add
		if (NPCHandler.npcs[i].npcType == VorkathConstants.AWAKENED_VORKATH_ID) {
			if (c.getVorkath().canSpecial() && c.getVorkath().isZombieSpawned()) {
				c.sendMessage("The dragon ignores your attempt to attack him.");
			}
		}