I am playing through the game a second time, this time as a mage rather than a warrior. The boars were easy to kill as a warrior. As a mage, I am having a heck of a time with them. They seem to be immune to all magic spells and they charge me, back up, charge me, over and over and they come very near to killing me, or do kill me, before I can kill them. Does any magic work on them? I have been trying to kill them in melee - maybe the most effective way for a mage to kill a boar is by using a bow?