At the beginning of Outskirts jump on top of the light on top of the door with a crouch jump, then jump to the left platform. Turn to your left and go down the long dark corridor and pick up the skull; it will say blind and your screen will flash black for a while. In this mode you can not see your weapon, body, shields, ammo, or radar.

To get rid of this feature use the following method:
1. Turn off your XBOX or Save and Quit.
2. Go to Campaign and select level and choose Cairo Station.
3. Skip the cinematics and then Save and Quit.
4. Go Outskirt and your hud is back.