Deathwatch
It is a time of unparalleled danger in the Imperium of Man. The galaxy is besieged from within and without by vile aliens, hell-bound heretics, and otherworldly daemons, and the last, best hope that the unnumbered masses of humanity have is the post-human super warriors of the Adeptus Astartes.
As a space marine of the Deathwatch, you are the mightiest weapon in the arsenal of mankind, armed and armored in the finest wargear. You are possessed of genetic gifts, force of will, and singularity of purpose.
And you shall Know No Fear.