By compelting all challenges, or get into a tenth lobby.
All of the callsigns are here http://callofduty.wikia.com/wiki/Callsigns
http://callofduty.wikia.com/wiki/Callsigns
callofduty.wikia.com/wiki/Callsigns :D
go to http://callofduty.wikia.com/wiki/Callsigns
u cant it is just a reward on cod4 on 6 theres killstreak rewards and callsigns
heres one with emblems and titiles http://www.se7ensins.com/forums/modern-warfare-2-discussion/156442-callsigns-and-emblems-pic-list.html and heres how to get them http://www.se7ensins.com/forums/modern-warfare-2-discussion/156444-callsigns-and-get-them.html
Complete "Think Fast Stun" challenge.All of the titles and emblems can be found here http://callofduty.wikia.com/wiki/Callsigns thx.
The hardest title to get is droppin' crates. To get it you have to drop a care package on an enemy in the game winning killcam *if you're a noob you could boost for it in 3rd person
Just mod like i do.
Don't waste your money on a strategy guide. There are many YouTube videos with great strategies and hundreds of online guides. All of the callsigns are here http://callofduty.wikia.com/wiki/Callsigns
Since "PG" is not a game genre, the answer is no. And MW2 is on the Wii... but MW2 sucks in general for all consoles it was released on. MW2 was the downfall of COD. That is all.
k5god