I was actually playing as a ranger, but I was playing together with my wife who was the sorceress character. I guess she picked a lot of the upgrades that I'd otherwise have to pick alone so that made both of our characters failry average at the end. We also had lots of problems with that room with the orb and the skeletons. It was really a pain in the ass to kill them all and took many retries. That and the last level were the two places where we basically stuck in one way or another.
BGDA was also the first game of it's kind that we've ever played. I've only tried Diablo 2 demo once, so our inexperience was probably another factor