The Nuke General has many strengths, but offensive air power is not one of them. Helixes work great for defense, but they are slow-moving and easily destroyed by the EMP Patriots deployed in this mission. It takes up to four MIGs upgraded with nuclear missiles to just take out a single EMP Patriot.
The best method for destroying the three Particle Cannons is by your weapon of mass destruction – the Nuclear Missile.
Do not build an air force on this mission, but simply forge your way straight into building a Nuclear Missile.
The usual build routine needs to shaken up a bit for this mission.
Build a Reactor, extra bulldozer, Barracks, then two Gattling Cannons before building a Supply Center.
Immediately research Capture command and build a pair of Red Guard, setting the Rally Point by the two oil derricks. Capture the two oil derricks.
Wait for the A10 Missile Strike planes to blast away one of your Gattling Cannons, rebuild it, and then build your Supply Center. Build an extra Supply Truck.
Build up to four or five Gattling Cannons and then build straight through to your Nuclear Missile – War Factory, Propaganda Center, then Nuclear Missile.
If your Supply Center, War Factory or Propaganda Center are destroyed, don’t rebuild them until after your Nuclear Missile starts building. The destruction of any of these structures shouldn’t slow you down because you will go straight from building one structure to the next.
It will be two steps forward, one step back. You will constantly be replacing your structures -- Barracks, Reactors, Gattling Cannons -- and bulldozers. Just keep rebuilding them. You will be fine.
Build a few extra Gattling Cannons to protect your base from Ambushes and troops dropped off by Chinook helicopters. Overlords will be popular targets for the A10 Missile Strikes.
Destroy the first Particle Cannon with a combination of a level three Artillery Barrage and a Nuclear Missile.
Be absolutely sure to keep your Nuclear Missile repaired when it is attacked.
Build a second Nuclear Missile. Use both of your Nuclear Missiles to destroy the Command Center to stop the A10 Missile Strikes, which are more damaging than the Particle Cannons.
Destroy the final two Particle Cannons by any combination of weaponry you choose. Continue building additional Nuclear Missiles to speed up the destructive process.
If you wish, build an airfield and research the nuclear upgrade for your MIGs at the Nuclear Missile facility.
It is not necessary to destroy Fire Bases, Artillery Platforms and Patriots to complete the mission.
The only building necessary to destroy on the northwest island is the Supply Center.
The Particle Cannons and Command Center will not be rebuilt but the War Factory and Air Field will be. Destroy the two dozers to stop them from being rebuilt. Note that when the Supply Center is destroyed, she cannot rebuild the War Factory and Air Field because they require a Supply Center, and she does not have a Dozer on the northwest island.
Gatling cannons can get expensive and it's easy to leave a dozer parked next to it when an Alpha Aurora comes by and destroys both. Instead, use gattling Tanks.
Start by building a Reactor and an extra dozer. When the extra dozer comes out, build a Barracks. Space all buildings and build them south of your Command Center. When the first dozer finishes building the Reactor, build a scaffold of a Supply Center next to the supply dock, then build another scaffold of a Supply Center right next to it, but away from the Command Center. Move this dozer away and build a gatling cannon south of the Command Center. When the "Hold the Line" strategy is deployed, wait for ten seconds and cancel both Supply Depots.
Meanwhile, your other dozer should be done with the Barracks. Build a scaffold of a Barracks on the shore and directly east of the Command Center. Build a pair of Red Guard and get the Capture Building upgrade. Set the rally point next to the oil derricks.
Build the Supply Center after the A-10 Strike comes by, and then go straight to a War Factory. When the War Factory gets done, crank out gatling Tanks and line them up along the northern shore. Be sure to space them out so you avoid losing more than one tank to each Aurora.
This should deal with the annoying Comanches and the deadly Alpha Auroras. Now build a pair of gatling tanks to guard the southern part of your base from the Chinook drops. If you get time, build another pair for the very southwest part of the island.
As you are building up your line of gatling tanks, the first Particle beam will activate. It will target the scaffold of the Barracks. Cancel it and build a scaffold of a Reactor in the very southern part of the island, in line with the Command Center. Rebuild the scaffold of the Barracks in the same place after the flames die down.
Once you attain the three-star general level, select the nuke carpet bomber and bomb the Patriots that are west of the southeast Particle Cannon. Continue to take down Patriots with the carpet bomber and artillery strikes. When you get the chance, use both the carpet bomber and a level 3 artillery strike to destroy the southeast Particle Cannon.
Get the chain gun upgrade at some point.
Once all of the gatling tanks are set up, defensive measures are just a matter of canceling the scaffolds when the particle beams strike and rebuilding them and replacing any lost gatling tanks. For offensive operations, build a Propaganda Center on the west side of the island and build Reactors and Nukes. It may be wise to use the first nuke and artillery strike combination to destroy the Command Center, then take out the dozers and the airfield with the next strikes.
With the airfield gone and the Particle Cannons diverted, you can simply build more Nukes and reactors.