[The quest row is quite long but with the exception of 1 enemy doable at a rather low level of 20+ and soloable.]
The quest row starts in Bad Lands chapter 10 camp, at the NPC Chief Hallsteinn.
First quest is a simple enough search&find for two kinds of stones. Do so and return to questgiver.
Ignore the quest text of the second quest and simply travel to the chapter 11 camp and speak there with Brudig Stouthelm.
Third quest is again a simple enough search&find for 3 pieces of stone, you find them in the Bloodspike cave near the entrance.
Quest #4 is a kill quest. Kill the miners (located near the road at 26k, 9k) and move on to Mogrim Greyhammer (chapter 12 camp in Black Fire Pass).
Quest #5 is a again a simple enough search&find for Foreman Stonebrow (located in the Black Rock Mine (entrance at 50k, 49k).
Quest #6 is simply speaking to some nearby miners and returning to Mogrim Greyhammer (suiciding is a very fine way to save traveltime...).
Quest #7 is a again a simple enough search&find for an Ancient Grimoire (located in the Black Rock Mine (entrance at 50k, 49k).
Quest #8 is a travel quest. Move to Alaric von Burbinstein at Chapter 13 in the Badlands
Quest #9 is a kill quest (6 Restless Tomb Guardians located at the Cave of Whispers (entrance at 30k, 28k). Ignore the quest text, just kill the skeletons and return to questgiver.
Quest #10 is a travel quest again. move to Elgrum Stoutgirth (Chapter 14 camp i the Badlands).
Quest #11 is a search&find for a Spyglass (located at 60k, 20k).
Quest #12 is just speaking to the nearby standing NPC Elgrum Stoutgirth.
Quest #13 is a travel quest again. Move to Alaric's Apprentice (located at 50k, 28.5k) and speak with him.
Finally he will give you quest #14 to find the Sigil on the Plinth and to destroy the Unholy Power (kill a level 27 champion). Well, I have a terrible orientation and couldn't find a "safe" passage to the quest location and I died probably more than 10 times. What I finally did was to move to the location of the Spyglass (from quest #11) and carefully jump down into the valley to the north of it).
Return to Elgrum Stoutgirth. (Chapter 14 camp). (Suiciding is a very fine way to save traveltime...).
Quest 15: Move to Altdorf and demand your helmet from King Thorgrim Grudgebearer and enjoy



