Complete Convention Center in Story Mode at any difficulty. - Tom Clancy's Rainbow Six Vegas 2
Complete Interval 3 in the Campaign. - F.E.A.R.: First Encounter Assault Recon
Complete Chapter 9 on any difficulty setting - Dead Space (2008)
1,091/2,120835/1,35039/66
1,439/1,485980/1,00036/37
130/2,449110/1,0005/47