dtgreene: How about a "magic only" playthrough? Basically, play with the restriction that physical attacks are forbidden.
Quite easy as a Sorcerer (or Wizard).
dtgreene: Or, if you want a *real* challenge, you could try beating the game without leveling up. Yes, this does mean that you will still be level 1 when you reach the final boss. Good luck! (You'll probably need it.)
That would literally be impossible for two reasons:
1, the game will refuse to let you proceed through the Prelude until you hit level 2.
2, even at level 2 the final boss would be mathematically impossible.