I killed Braccus, Lucian and Dallis without triggering the second phase of the fight with the giant Kraken.
I killed Lucian by dropping deathfog on him before I talked to him. When the dialog finished he would be knocked down and taken out of combat but technically still alive. Then I noticed that if Braccus got below a certain threshold of health he would trigger the second phase of the fight. So I used the Mortal Blow skill on him before he triggered the second phase to kill him. Then I would finally kill Dallis.
I've been looking at how people beat the final boss online and I saw no mention of this easy strategy (except one steam post where his game got bugged or something) . So I was wondering if my something about this is bugged, like Lucian not dying in the deathfog or Braccus dying to Mortal Blow.