This is an idea I have had for a while. Basically here is the story:
You will take on the life of any individual on earth that you choose. Secret agent, civilian, military. Whatever. We will go about our everyday lives in whatever fields we are in. One day, an earth shattering discovery. Alien ships are now in orbit overhead. We try to send out peaceful messages welcoming them, but are only greeted by them a week later. When their alien ships come down to surface in force, the Human-Covenant war had begun. Within a few hours, the governments of the world are defeated. We barely even scratched these aliens. But they land on the surface in search of artifacts, ones that had been kept under lock and key by the governments around the world. Resistance pockets still rise over the earth. And one, massive secret has been unlocked.
A squad (only excepting three others for this spot, as I will be one. After these three are filled then they will be closed and everybody else will be from different walks of life). But anyways, a squad of teenage super soldiers breaks out of a base they were sealed in during the attack. This is the spartan program. They look normal, but are highly trained in combat. Biologically mutated to be faster and stronger. They have special armor. They are the forefront of the new resistance.
Basically this is a halo spinoff I have been thinking of for a while, and would like to see get some action. Post if you are intrested! Thanks!