My first Achievement was for Crackdown on the Xbox 360.
"Take Me To Your Supply Point"
Unlock your first supply point.
Ah, Crackdown. Admittedly, it was a pretty fun game to play, even if most people probably only really remember the game as "The game that came with the Halo 3 beta". Oh, those were the days.
Ironically, even with 360 games to play, I spent almost all of my time on the console (up until Halo 3 came out) playing Halo 2 multiplayer. First time that I had ever played a game online.