first u get enough cod points to buy tactical insertion and take as many guests as possible to free for all when they all have tactical insertion and you find a isolated spot and spawn kill them
Level 35
just camp
MW3 is after COD black ops.
Level 27, for 2000 cod points
play multiplayer
level 38 and it will cost 2000 cod points
Unlimited
At level ten you unlock the playercard
Cod black ops
You unlock it at level 26, and then you have to buy it for 2,000 COD points.
Google black ops prestige symbols. If none of the symbols are on your playercard, you haven't prestiged.
There are approximately 52 trophies in cod black ops (Playstation3)