What weapons and armour are you using? I'm in dragonscale armour with a dragon bone sword and a dragon bone bow. I'll tell you the enchantments on it later when I switch it in I can't rememeber off the top of my head.
Had a go last night, killed the first dragon and then went off to find the greybeards. Didn't go very well though, I couldn't find the right path, stumbled into a fort with about 10 bandits in it and died then it took me right back to before I set off in the first place so I ragequit.