HOW 'BOUT THIS?

When you goto Gate B or Gate A, you see a survivor (doctor or some Class D like that), then he follows you... You escort the survivor to a Jeep car and and then the MTF shoots the survivor and then MTF shoots in your jimmy (later the SCP 682 attacks him like that) and then you encounter a car crash and the ending screen pops up....

DUNDUN DUUUUUUUUN

I had an idea where you would sneak out of the facility as long as all the nukes have been disabled, and the camera would pan out to third person and zoom out with credits rolling and our character walking off into the distance (empty, or with city in distance.). Helicopters would fly overhead (implied to be Chaos Insurgency.) I also thought the endings could randomly be at night too or raining. I also think Gate A is a little empty and there should be green hills and a road in the distance.