I think I had a bone necro up to the part right before Diablo on the highest difficulty and I just kind of gave up because my strongest spell would take off like a 7th of a regular enemies health.
Towards the end of my stint my favorite thing to do was take my lvl 16ish assassin into games of parties with similar levels and going hostile and hunting for them.
I stopped playing when I made a hardcore assassin and I was level 12 or something and a paladin comes in and convinces me to duel, he says we're low level and it's exciting, blah blah blah. Then he one shots me and has a macro for some huge wall of text and I pretty much haven't played the game since.