All I can really suggest is run around heaps, have a lot of potions and learn his animations of when he is attacking.
With a ranged character I have found standing near the entrance to the top platform on the stairs and running in getting shots off at him then running out is a good way not to die as much.
Most of all just remember Typhon is basically the Boss monster of TQ so be patient and once you kill him hopefully you are rewarded with lots of goodies! (like epic items, relics and green items)
