Battlefield 3 Walkthrough Part 1 - Semper FidelisCheck out this walkthrough for the first person shooter, Battlefield 3, made by DICE, and find out how to beat "Semper Fidelis".TranscriptMan: My brothers, you know what must be done. No one in this vile place is innocent, no one. Everything and everyone will burn. Man: Are you alone? Huh?