I found a way to skip getting the car on the bride http://www.youtube.com/watch?v=CR0NR6GLKpk . It can be fast if you bring a prop you can climb on with you from last map like from this demo here. http://www.mediafire.com/?dxadfbr5wslxm1o Using abhing you can skip using the car until your on the map where you have to kill the heli. That map has checks if you have Alex and i can’t find ways around it. There another map before the heli that checks if you have Alex but if you abh out side the fence and back in after the check you can skip the check.
This has been known for a while now, you didn’t find anything, sorry.
I think this stuff has been found within a week of release
Really old, really.