This game is also available on Xbox 360.
one play is allied and the other is soviet, the soviets job will be to defend and the allied's to atack.
when you load up build as normal until the brutal sends a few attacking units to one of you, this will be the person it focus's on.
When this happens the soviet player will defend the player been attacked by building tesla towers/ flak cannons.
keep the player defended as well defending you/ your teammate.
The allied player should focus on air so get up to tier 2 and then build 3 or more airfields and fill em with century bombers.
THE ATTACK
once this is done the allied player send's there centrys to the enemy base and bomb the following:
there war factory (3 bombers)
There Conyard (4 bombers)
There navel yard if they have one (3 bombers)
MORE INFO
The allied player should scan the enemy's base most of the time and build more centrys if they have more structures or attack from a different angel if they have strong AA