R.U.S.E.

There are only two multiplayer match modes:

1v1
2v2

As the description states, you must attain at least one RANKED win in each of the above match modes.

This achievement is much easier to obtain if you have a boosting partner or partners.

Select Xbox Live from the main menu. Thereafter, select ranked match. Once you get to the next screen select your desired match mode. If you are boosting, simply launch the match at the same time. Because there aren't many people playing Ruse online, you should easily be able to get into a match with your boosting partner(s).

Once you begin the match, the player going for the achievement should build Barracks and an Airfield. After the airfield is complete, research and construct a bomber. Further, construct an infantry unit. Once your units are created, order them to attack/capture the enemy's base. You should win the match in short order.

Repeat for the remaining match mode. The achievement will unlock shortly after you have won your second match.

Note--The player that is not going for the achievement should sitback and grab a drink.