When in the ant hill, run past all Mammothants until you reach the portal opening. Leave, save the game, then go back and fight the ants that followed. Then fight the queen, but before you attack her kill all of her servants. They will get in the way. Throw poison potions at her and if you are playing a Shadow Knight, use a level 5 Disease Bolt. Slow her down and attack with a fire weapon She should die easily. To kill the Queen Mammothant very easily, when you walk in the room where you fight her, do not move from the middle. Block her attacks when she does; she has an easy to follow pattern. When she goes away, the ants still will not appear and you will be able to shoot her with arrows. After you defeat her, kill the rest of the ants by slowly moving or they will all attack you at the same time.