I did test wizard, its so hard to keep alive at the start. I went bravely in the beer cave at the start and well, there was 3 bears and i got totally killed in there, lived maybe 5 seconds lol. Yeah this was with PotD, trial of iron and expert mode on. I think i really should do one easier play trough with hardest so i know how many enemies i face.
It's hard work to figure out what class is the best for soloing purposes and takes a lot of work. Only way i can imagine finding out fast is to cheat to level 12 and then got to the endless dungeon and see how far i can clear with each of the characters at solo and with PotD. Because in the end the class that shines at max level is the one that can kill the last boss anyway to complete the game. I'm really not sure can any character do it with solo. So far i been hoping that someone finished with PotD and tells what character he/she done it :D