Baelon of Thule (Heroic)

Strategy

 * after you have slaughtered several waves of linked Lizardmen and Eyes, Baelon will come storming through the Fear Gate to destroy you.
 * everybody needs to stay inside the circle marked on the floor, or you will get crushed.
 * get out of green mist that occasionally appears, but remain inside circle.
 * sometimes 3 adds join in, dunno if that is hardmode or whatever.