Just finished with SP for this, looking to boost all online and co-op achievements, including DLC. Text me on Live if interested, GT: DarthVillainous.
If you can't be bothered to send a text with your friend request, then I can't be bothered to accept it.
Currently boosting: Battlefield Bad Co., Crackdown 2, GRAW 2, Halo Wars, & many others. Check my bio on my xbox live gamercard for details, and text me on Live if interested.