You thought Typhon was hard? I could take him out in less then 3 minutes with my Harbringer...And if you thought he was hard, wait until you fight the fianl boss in the expansion pack...He has 3 attacks that can instagib you.
Yeah you can play the entire story line multi. Its a lot more fun when you can have a excellent ranged player/spells/archery with a tank player.
i7 930 @ 4.2Ghz
GIGABYTE x58 UD7
Kingston HyperX T1 Series 12GB
GIGABYTE 7970 (1280/1800)
OCZ Vertex 2 100GB SSD & VelociRaptor 300GB