The Warrant

As soon as you start the game, you’ll get the chance to select your character’s gender. This cannot be changed unless you start a new game. After landing in the cult compound, follow your team to the church. Upon entering the church and finding Joseph Seed, you’ll eventually get the chance to cuff The Father. This particular moment is a key to a secret, quick ending that you can access by ignoring the prompt.

You can do this deliberately to view the ending then just start a new game after. Otherwise, proceed with cuffing the Father and walking back to the helicopter. Once you’re in the chopper’s vicinity, a cutscene will trigger and this short mission will be complete.