I recently beat Bulletstorm and at the end of playing I actually got up looked at the case and wondered why I wasted 5-6 hours of my life playing it. I was a fan of Gears of War (made by same people) but I just didn't enjoy this game. I didn't like how you had a weird whip that you could grab enemies with and bring them towards you. It was sort of weird. But I did like how it was somewhat like Gear of Wars in ways. I would not recommend it to people unless you want to spend 6 or so hours of your life playing what amounts to crap.
THIS IS JUST MY OPINION