It's easy to grow frustrated with Mirror's Edge; the game doesn't bother being that user friendly. At times, it might feel like pixel-perfect precision needed in old platformers is needed to complete the game, but it's usually worth the extended effort to try. When it works, it works great, and if the issues are addressed in a sequel GamerVision could see the series being extremely well received in the future.
In the present, however, it's still worth paying attention to. It's fast, original, and beautiful – everything you should expect from a holiday blockbuster. If you're easily frustrated by difficult games it might be wise to rent it first, but be warned; the beauty and addictive race modes might pull you in for a purchase.