You must face the White Witch on the final level. To defeat her, run until she does a backflip. Above her head will be a circle will read "5+". Hit her five times then a bow and arrow will appear. Shoot her with Susan, then hit her with Edmund. She will call giant ogres to attack you. Kill them with the barrels. Repeat, then set the barrels on fire and hit her with them Repeat the first process, repeat again, then Susan can blow the Ivory Horn to summon Aslan, the king of Narnia. After that, the level will be over.