I would say I'm an achievement whore..
Out of my 94 friends on XBL,I'm the only one with over 1000 GS on GRAW2.
I bought the 120GB hard drive so I could install the majority of my games and play them to get the achievements without hearing the dvd-drive spin up to 14,000RPM.
Been working on 100% completion for Saint's Row 2 (IMO a better game than GTA IV) and in fact the only game I've ever traded in was GTA IV and got a nice discount on COD:WAW
I still own all the other games I've bought or received for my 360.
I shudder to go back to playing Test Drive Unlimited just to get some achievements.
I want to get the Veteran Achievements for the COD series (COD2,3,4 and WAW) but after playing 1 level of COD4 and WAW on Veteran..I'm wondering if real life war was like that..having japanese soldiers throw 10s of hundreds of grenades at you when you only have made it 40 feet onto the beach.I've thrown more grenades back than Peyton Manning has thrown footballs in his entire career.