Hey, I just beat nightmare and I'm already almost level 50. I remember Blizzard saying that they expect you to finish hell at 60. Have I over leveled? I never skip champs and try any sidequests I find though I don't go looking for them. Have I over leveled?
They wanted you to beat normal by 30, nightmare by 50, and finishing hell you'd be right around 60. Personally I dinged 50 when I killed NM Diablo and dinged 60 just into Act 4, but I also was playing with friends a bit in Act 2 for most of 58.
Level Progression