I just got it after a match with 20+ kills and 0 deaths. So im pretty sure you get it from having a flawless match with no deaths.
you have to complete challenges of guns and stuff like that
You need to go through a whole team deathmatch at any map without dying
There are several different emblems; you need to be more specific and say exactly which emblem(s) you wish to unlock.
The star emblem can be unlocked by reaching level 54 in multiplayer mode.
There is no Panda Emblem, unless your talking about the badger.
http://callofduty.wikia.com/wiki/Callsigns/Modern_Warfare_2_Emblems
Go there for all the titles / emblems
Kill 2 or more enemies with a single frag grenade, 50 times.
you complete challenges under barracks
There is none.
There's no porcupine emblem... the closest thing to that is a squirrel, a badger, some hyena like creature, and a bear. Sorry.
No
You cant.
It is impossible to get the 10th Prestige moving emblem on Call of Duty: Modern Warfare 2. Infinity Ward made this to catch hackers red handed. That's why you must hack to the get the emblem.
It is unlocked at level 69.
2nd prestige
Nothing they are the first emblem you unlock.
Get a "Payback" by sticking a Semtex on an enemy
Get a "Payback" by sticking a Semtex on an enemy
A new emblem and 10 different custom classes.
Call in 50 Pave Lows.
get 50 pred misilles