I love Mirrors Edge's world, the clean white/colour scheme is fantastic! While I found it a bit frustrating at times, overall it was pretty cool. Completing it sans weaponry for the 80G though? Not gonna happen....
But yeah, 10/10 for fun factor. 3/10 for plot - You're Faith. You like to run away from baddies. For all we know, you're the baddie. Plot = sucky. But this puts fun back into gaming, too many stories are getting wrapped up in their own stories that gameplay is suffering. M/E probably pushes the gamplay over plot thing a bit too far, but who cares. It's fun!