I haven't even went into the tower and am level 15 and currently I can kill pretty much everything in Broken Valley easily. (also can kill things in the Fjord in 1 hit) If you are going mage I recommend maxing Fireball and Magic Blast and if you don't want to be a pure mage go for a bow as your weapon. (mine kills everything in Broken Valley in 1 - 3 hits.
