Originally Posted by Tyger7
Attain the highest level of readiness in each theater of war.
The only alternative to buying the Online Pass to play the normal MP portion of the game is if you own an iOS device (iPad, iPhone, iPod Touch) and download the "Datapad" app (free), or purchase the "Infiltrator" game ($7) which can also increase your Galactic Readiness.
Evidence presented in this thread
shows that this isn't the case; your readiness might show as 100% within the app and on BSN, but the game will not pull that info without an Online Pass, thus not unlocking the achievement.
I think the apps should still be mentioned as an alternative to playing multiplayer though (just make it clear that the Online Pass is needed regardless), but it should be updated to note that Infiltrator is now available on Android