to get all emblems you need to complete a certain of challenges for each weapons, which is really hard...
Unlock the challenges for them.
you unlock it by doing multiplayer it just matters how much kills, or falling, and random things you do
yup
I don't know but there is a spotty nerd called Liam crumlish from barnfield south academy
No, all your guns are reset to the same as you were when you were level 1. The only thing you unlock when prestiging is emblems and titles.
Complete challenges and level up.
Your face thats the answer
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
you have 2 send a certain message and it unlocks all tittles emblems and golden desert eagle
You gain titles and emblems by completing certain challenges on multiplayer, check your barracks for the challanges. Here is a list of all the titles and emblems for call of duty modern warfare 2 on the Mordern warfare wiki: http://callofduty.wikia.com/wiki/Callsigns
That question isn't very specific, but I can tell you this from experience. You can mod your gamertag, you can hack prestige levels and unlock all callsigns and emblems, you can also use a jtagged xbox to use aimbot.
you level up and earn them all