u have to knife somebody who has std as their title.
I believe its when you destroy 5 enemy tactical insertions.
Complete Flashbang Veteran 1 challenge
you unlock it by getting 50 kills with the stealth bomber. this is the Spirit 1 challenge.
Achieve 1000 headshots with the ACR. You must be prestiged at least once to unlock this challenge.
Complete the "Master Chef III" Challenge. Get 20 kills with cooked frag grenades.
No more Mw2 Challenge Lobbies on Ps3 because of the new Ps3 Patch.
YEA
You have to get the 'Multi RPG III' challenge.
You can not host a MW2 challenge lobby for the 2013 PS3. This is due to a patch that was put out for the PlayStation. You may be able to host a lobby if you jailbreak your device.
Look up how to bypass on MW2 on Youtube <-- It is no bypass for xbox! only ps3....
I believe its when you destroy 5 enemy tactical insertions.
rewarded alongside "click click Boom" challenge.
Achieve the ACR Mastery Challenge.
Just look on the chalenge section under that and u will find it.
Complete Flashbang Veteran 1 challenge
You have to kill 1000 enemies with any silenced gun
go to next gen update.com no spaces and if you have a flashdrive donload a challenge lobby by clicking on the 8th box or a box that has the option your lokking for to get a challenge lobby