The gatekeeper. Has anyone fought a the on while the gatekeeper was still alive or does he have to be dead. What if when you kill atheon with the gatekeeper alive the gatekeeper opens a portal between future and past. Theory 2: Gorgons layer. I doubt anybody has killed all the forgo s in the gorgons layer. Maybe that might have something to do with it. Theory 3: Has anyone actually explored the route to the Templar (short question) Theory 4 During the portals while fighting atheon has anyone went and looks around on mars and Venus.