If you have played and enjoyed All Things Devours and perhaps
wish that there was a little more of it, then you may want to try the
challenge mode. It is activated simply by typing 'challenge' as the first
command of the game (and must be so activated each time you play). The
challenge features three changes to the game which combine to make your
task more difficult. Whereas All Things Devours typically has
many different types of solution, the challenge constricts your options
and it is most likely that you will need to develop several new approaches.
Given the nature of the challenge, no hints are provided. If you do become
truly discouraged (and I hope it is not so) then here is a walkthrough.
It might also be interesting to compare it with your own solution.