5. Repair the Coastal Guns;
There are four guns   to fight with ships on the beach. There is special marker on the north from these guns  which you can order your ally to repair the guns. Do it.
Take care of other two . train two engineers and command them to capture the guns.
6. Train 5 Javelin Soldiers;
You can train a new type of infantry in the barracks. Soldiers equipped with missile launchers, are quite good against the machines, but they cannot defend themselves against other infantry. Train five (or more) units of this type and make them enter the buildings on the coast.
7. Repel the Soviet Navy;
You have less than two minutes to repair guns on the shore (target 5) and train additional troops (target 6). Russian navy is coming. With Javelin Soldiers and guns you gonna win without any problems with the vehicles.
Keep also some Peacekeepers - Soviets will attack the beach with infantry and neither guns and soldiers can handle with them.
The Soviets will attack twice. Repel their attacks is not a difficult task.
8. Build Armor Facility;
You will get Armor Facility - build it in your base.
9. Build 5 Multigunner IFVs;
Multigunners are equipped with standard anti-panzer and anti-air rocket launchers. However, you can modify their armor by appointing them with various units. For example, Multigunner with peacekeeper (armed with gun) will change his weapon into anti-infantry gun. Such a connections will be the best in this part of the mission, so if you do not have Peacekeepers, train and load them into vehicles.
Create 5 vehicles and send them to the beach, near the guns.
10. Eliminate the Remaining Soviets.
The enemy will be attacking again. With IFV vehicles you will defeat them without a problem.
In the meantime, try out the first special power (Cryoshot) in the allied campaign. Activate it by clicking the only active icon in the top-secret protocols table.
As soon as Kirov planes will show up, command your soldiers to leave IFV Multigunners. Order to attack Kirov's.
You will be also attacked by the Soviets Dreadnoughts. However, air unit will take care of them.