Thanks, Frostmarrow, for the nuts n bolts. I figured on just winging that, but it's nice to at least have a base.
As to the references folks are making to movies and video games, I don't relate. I've probably seen
Goonies but I don't have a head for remembering movies. Video games? Puleeeze! I'm 50!

Haven't played many.
Toejam and Earl was my speed! Likewise, CRPGs and CCGs, never experienced them. I accept it, I'm just an old fart!
So far, combining Guslinger's and Dagger75's suggestions seem the most workable to me. Maybe not as "fearful" an adventure as some of the other suggestions, but it could certainly be made challenging. Of course, the fear would be there at the beginning following an unknown trail. How do I work fearful anticipation into the climax?
Thanks to all. And nothing's settled yet (except that I'm older than dirt!

), so keep those cards and letters coming folks!