My big gripe with any game that has an option to run, why wouldn't you run? Unless there's a reason to walk, just make her default movement always the run. Otherwise you're just wasting my time by giving me a slow movement speed, or you're forcing me to hold the shift button all the time.
Otherwise, it's a very compelling prologue. Also, wish you would have mentioned somewhere this is only a prologue. Maybe change title to "Redline - Prologue."