Its ok... but not great.
Don't know why the ad takes itself so seriously. i.e. Dark, deserted alley. "Undergroundy" techno music. Could've worked better if it had an everyday scene of a young mother pushing a stroller down a mall/wallmart aisle. Along with the women turning into samus... the whole environment turning into the Metroid universe. Only constant is that Samus is still pushing the the stroller around. (Perhaps the baby in the stroller could become a metroid?)
Something along those lines... with a sence of humor... would've done better with the "Who are you?" slogan. A slogan that now, a year later, seems to have drifted far from its original concept.
As it is, this ad reminds me too much of the failed "Joanna Dark" ad that featured a similarly hot, yet stoic, female lead. Show some actors with a little personality. Somebody that customers can relate to.