Holy crap! I actually did it and it only took 3-4 times to get the 'That's Just Crazy' achievement on the Insane Difficulty level for 75 Gamer points. I seriously thought it was going to take me a couple of months to get this one in the books just based on how long it took me to complete this on the Normal difficulty setting. I for sure thought I wouldn't get this done before Gears Of War: Judgment came out.