I am sure someone will be working on one. Radiant doesn't have time to write walkthroughs (not with all the bug fixing going on, and other projects he intends to work on after this), and I certainly can't write a walkthrough for the rogue as I haven't finished playing it myself
I am testing it though, to check for any further bugs on top of what was reported.
We deliberately released the game without a walkthrough because we believe it is more rewarding to players to find things and work them out for themselves. It is meant to be hard to get a 500/500 score on your first playthrough; the game rewards players who are extra diligent. It also gives us some indication of whether the puzzles made sense - which they do, given that people have managed to find all the 500 points for most of the classes (one point missing for the rogue)
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Anyway, if you are patient, I am sure we shall see one at some point.