Were you entranced by the E3 footage of DICE's highly acrobatic action-platformer Mirror's Edge, but wished you could have seen more of the title's totalitarian cityscape? A recent developer walkthrough, showcased yesterday at PAX, might be right up your alley, over your catwalk, and onto your adjacent roof. Pop some Dramamine, then check out the video after the break to see some of the more unconventional tactics one can use to deliver a package. We just wish our trusty FedEx guy could perform l'art du déplacement with such intrepidness and grace.