[Morgeruat]

another things that helps is learning to snipe, with thieves or archers(rangers) you can't necessarily survive melee all that well against well prepared encounters, so splitting your enemies is useful. some classes are "harder" to solo than others, such as an unmodded shapeshifter druid, or beastmaster, kensai dualclassed to a mage gives enough of the benefits of fighters and the power of mages to make the game very easy, and as such is one of the more popular powergaming choices