I need someone to tell me a good strategy for beating Damian Dragon Commander after Broken Valley has been destroyed so I can get to Williams to get his quest so I can do the main quest.
Wait until you go up a few levels before trying to get back into Broken Valley. Clear out the start of the fjords and maybe complete a couple of the flying fortresses there first. The first dragon you meet in Broken Valley is level 26, or something, so is a little tough if you've only just gotten the battle tower.