As I've been trying to get the last trophy in Black Ops, everyone I know has let me down. Sacrificial Lamb trophy is the last one I need. I've tried with a couple family members, and a few friends. They all don't have the talent to survive. I am probably the best at zombies within my whole family and friends. Trying to get it online with other people is a joke. EVEN if you have a mic. It really takes some luck and patience when dealing with it all.