Surprised this game isn't scored higher. It's got an interesting concept that kept me hooked all the way through, even at that sadistic last level. I died so many times there that I knew it was the last level just from the difficulty alone.
The only reason I'm taking a half-point off is because the "G" mechanic felt more annoyingly difficult than cleverly challenging. Your timing really has to be spot-on in the areas where you need to use it.