Okay so I beat the High Dragon today at level 16! It was actually a lot easier than I expected it to be. The right group and placement makes all the difference.
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I got the Heavy Dragon Scale Armor made from the Dragon scale that the Dragon dropped, what an excellent piece of armor, and it looks fantastic too.
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I still have a ways to go, I completed the Mages Tower, Redcliffe and Orzammar. Did all the stuff that I could in Denerim for the time being, now just got to the Elves.