Originally Posted by Actiionz
Earth United 30
You finished the first part of the Campaign.
There are two parts to campaign mode, so you will unlock this one after you complete the first half of the game; which will be 20 fights. There's a progress bar on the select screen of campaign mode, so you will know how far you are. See Closure
for more info.
I played a few fights in co-op so when I completed the first half of the campaign I didn't get this achievement. Do I have to restart the campaign or can I just replay those fights? Anyone know?