Originally Posted by X JOHNSON 4
In the achievement guide it says for co-op veteren to just play missions over and over because the other game types take more time, all i did was played co-op elimination with about 5 other people on embassy, it only took around 3 minutes a game.
The easiest way to do Co-Op Veteren is to make a Recon match make it a Custom game on Headquarters where you only have to Recon 1 Zone and Alarms are turned off. Then everyone equip MGL's. Run to the Zone killing the 3 groups of Enemies takes 51 seconds per game. 30 minutes to get 30 missions.