I have 2 issues with the game.
1. I need some people to play Left 4 Dead with me on expert, I want to achievement for beating 1 campaign on expert, and the randoms on Xbox Live are incompetent and I occasionally get some asshole who thinks it's funny to just start team killing half way through a chapter. (no seriously, this much have happened 4 times with different people when I tried it) So if you can help just post a comment along with your gamertag and I'll send you a friend request.
2. I tried getting the Akimbo Assassin achievement in an offline campaign, I only used handguns, I don't think I used molotovs or pipe bombs, yet I still didn't get the achievement. I'm not sure if I meleed or not, but if you do so would that mess up the achievement? Has anyone else had problems with it?