Welcome Smash. Hopefully the guys can help you with that and vice versa. Makes sure you go in to your profile and add which games you own. The site will add the last 16 games you've played automatically but you will need to do the rest yourself.
I don't suppose you have Quantum of Solace? A few of us have been trying to get enough together (8) to get the mp chievos.
Welcome mate, I'm sure the are many people out there to do the ODST achievements, especially endure hey I also need a few firefights and am willing to help out when I can.
Currently Boosting: Saints Row 2, Gears of War 2 and Splinter Cell: Conviction (if anyone's up for it.)
sweet i almost got it once we got down to 5 dudes and died cause one guy bailed. so ill bve willing to give it a go would be nice to try without lag but. got deja vu last night after 3 hours