R.U.S.E.

This is a Single player achievement and cannot be missed. You will unlock this achievement after completing mission 9 of the campaign. The achievement unlocks on all difficulties so if you're having troubles play on the easiest difficulty.

At last there is a complete video guide made by Uimasterskill which can be found on this link:
http://www.youtube.com/playlist?list=PLA122B0FFE3206BE0

(any RUSE single player mission can be found on this link)

This video is the start of mission 9: (1/2)