I bought this yesterday and I can't get over how short it is. It took me 35 minutes to finish it on easy mode, 49 minutes to finish it on normal mode and an hour 4 minutes to finish it on hard mode. I did enjoy it, but it was way overpriced at 800 Microsoft Points. The plus side is it only took me about 2 1/2 hours to get all the achievements. Anyone else shocked by how short this game is?