

Slight randomization can occour while completing them, but most of the times the tasks and the outcome will be the same. They are scripted, so any time your survivors reveal them, you'll always have the same tasks in order to achieve their goal. Each survivor can only provide one Personal Goal questline during their lifetime, so after you complete or fail/ignore/abandon these missions, they won't get another goal in the future, even if you use them for starting a new community.

Some goals are more common than others, however you can only get each of them once per community. These Goals are different questlines to achieve something important for your survivor, and can only be completed with the survivor coming up with them. When playing Campaign each survivor in your community has a chance to reveal their Personal Goal.
