That hobbit has been fighting that snake for a while now, so I think it's about time for a new lone delver.
I recently discovered as series of graphic solo adventure published in Avalon Hill's Heroes magazine. The Crystal Key written by Richard Snider (author of the FRPG Powers and Perils) and illustrated by Jim Talbot (artist of the covers of the T&T solos Naked Doom, Labyrinth, Deathtrap Equalizer, and Gamesmen of Kasar) was the first (V. 2 n. 3). This series of solos makes use of detailed illustrations with minimal text to inform you on the best decision to make. Here is a great example of how well this is done:
You could certainly describe this room and all of its details, but this illustration does it all.
Some of my favorite sections deal with the various ways in which you can meet a unfortunate end. Our new lone delver has just opened the wrong door. Time to close the book.