I have a difficult time with GD's as well. But I am obsessed recently, and just keep going back to Destard for more! I'm using the GD challenge as a test of the benefit of having Healing replace Parry. So far, I am still undecided. I usually have to run in, get a few hits, then run out of the cave again. Often, I will be killed 5 times before killing the GD. Regular dragons are easy in comparison.