Be capitalist
bank
forge -> build as many scouts as possible, wall-in the enemy if they didn't built anything yet.
Armory -> energy, continue to build scouts, you should wall-in most opponents now if your ally is any good. Keep the mass big enough (about 30~40)
outpost -> manpower, upgrade to arsenal and build queens, use their missiles to destroy the enemy base.
If you think you got enough cash, destroy the bank for another armory.
The scouts should never come into range of the enemy base.