Can someone help me get the insane achievement on Gears of War 2?

I need someone to do a coop run through the campaign, with that person playing on Casual and me playing on Insane. I'd prefer it if that person has a working mic and no thick accent. My gamertag is xxxSniper0xxx. That's a zero after the "r", and no "period" at the end. Send me a message or a friend request.