Adam: Failure
First, Adam's baby brother was lying in a cot, dead, and Adam could not stop the tears in his eyes. He felt pain and vengeance boil in his blood as he tried to remain strong. He could not handle one of his siblings dying before him. Both of them were too young.
Next, Bree, his little sister, was trapped in Troy's grasp, begging Adam to kill her and Troy, and he could not do it. He had grown up and taken care of her, both of his siblings.
Adam had never felt as much of a failure in his life.