Interesting how times change... and speed up --- maybe it's the Net ??
Once there were no walkthroughs.
Then they appeared usually quite a while after a game was released.
Then at the very date of release (at least somewhere in the world and in some language !!)... or at the most a couple of days after !
And now what seems to be an excellent & very detailed long walkthrough of
Rhiannon has been posted on a Forum nine days
before official release.
The world is certainly accelerating !