Many of us lead sedentary lives, doing the same thing day in a day out, so if you dream that you are an adventurer, your dream can be a way of providing you with the mental and physical excitement that you are lacking in waking life.
Reading books or watching films about adventurers can contribute to your dreaming that you are an adventurer yourself.
A physical adventure in a dream can represent an emotional adventure in waking life.
For example, if you are moving somewhere far away, starting a family, beginning a new career or changing careers, you may discover that you are an adventurer in your dream as well as in waking life.
If you dream that someone else is an adventurer, and that you are observing them or reporting on their activities, you may feel that you are left out of things in waking life.