Well, let's say, to 50 per cent. I did the trail from the Braunschweig hut to the Wassertalkogel, spent the night in the Rheinland-Pfalz-Biwak, enjoyed the early morning view from up there(!), and went back the same way. Thus the other and surely quite a lot more difficult other half I can't claim to know yet. It certainly was a grand hike in very good weather!
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe