Free Brutes
You will need a Genetic Mutator and Slave Miners. Use the Genetic Mutator to mutate Slaves into Brutes. Because Slaves are free, your Brutes will also be free.
Hint Soviet level 7: Easy win
Oyou get the chance, build a Missile Silo. Destroy the Psychic Beacon controlling the Allied base. Destroy all the Psychic Towers and send in a Navy Seal to destroy Yuri's Fortress. You should try to destroy the Construction Yard so that he cannot build more towers. Also, send in about five to ten Seals in case one dies.
Defeating the Elite Black Legion
If playing as the Allies on the last mission, there are four 3-stripe Apocalypse Tanks as the last line of defense. These can easily destroy the largest of attacks from normal troops. Get about four Spies and go to the top right corner. You will find a base with Telsa Defenses. Get a few Harriers to the Nuke Power Station just below and across from that base to put them down. There may be some Dogs, so put in a few Grizzlies to kill them. Put a Spy into the Barracks, War Factory and Soviet Battle Lab. Also, put a Spy into one of their Ore Refineries below to steal many credits. Get a few Psychic Commandos, another Spy, and Mirage and Prism Tanks outside the final base. Send the Spy into the closest Power Station or Nuclear Power Station and the Telsas will be down. Crush the Red Soviets, but you should find that even your veteran units (due to the Spies going into the War Factories and Barracks) are no match. Get the Psychic Commandos to take them over and help you take out the rest of the forces.
Get rid of the Soviet Black Elite Guard around the Kremlin
The most annoying part of any mission in the game is when the enemy stations tanks as guards. To get rid of them, build a Chronosphere. This strategy works especially well against the Black Guard. First, build a Chronosphere, then find a target (in this case a Black Guard tank). Once the Chronoshift is ready, select a vehicle that is stationary. Activate the first part of the Chronoshift, then scroll over to the lake and activate the second part of the Chronoshift over the water. The tank, in this case a Black Guard Apocalypse, will appear in the water and sink into the lake and never return. This reserves your tanks for a later attack.
Stop opponent from building Gis
At the very start of the game, your Allies enemy will usually build guarding GIs so that he does not have to waste time building them later. To stop this, you should do one of the following things.
If you are Britain, build a sniper and put it into an IFV as quickly as possible. Then, send the IFV close to your opponent's base. Do not get too close or a sniper can shoot from afar. Your IFV will take out the guarding GIs in one shot, and it will be very fast. Your opponent will not have time to react.
Send in the three Attack Dogs to your enemy's base as quickly as possible. Bring one of them next to your enemy's Barracks. Every soldier that exits will quickly be killed by the dog. Send the other two dogs to the soldiers your enemy already made.
Cheaper Cosmonauts
In the Soviet mission where you are on the moon, the Cosmonauts cost $600. Use the following trick to get cheaper Cosmonauts. Build a lot of Barracks and sell a few. The barracks cost $500 and give you a cosmonaut, saving you $100. If you need a few others, building a lot of Barracks will increase the rate at which they are trained. You have plenty of money for this mission -- build many Cosmonauts and attack the bases. The Psychic Towers and Masterminds cannot affect them since they are an air unit.
Build a War Factory and sell it. You should get four Cosmonauts, which will save $400 dollars. However, you will get money from selling the War Factory for a savings of $1400. Make sure to have a primary War Factory before doing this.
Compromise Soviet/Allied Demolition Truck
You can play as Yuri for this to work. Build a Allied IFV, or capture one if Yuri. Place a Crazy Ivan inside to build a low scale Demolition Truck. It still makes the radiation and explosion, but on a smaller scale.
Send a Crazy Ivan into a Flak Track and it will act just like a Demolition Truck when it explodes.
Nuclear Reactor explosion
Build a Nuclear Reactor inside the enemy's base. When it gets destroyed there will be a big nuclear explosion.
Easy kills
This trick works with any country. First, go in and destroy everything execpt their Ore Refinery, Barracks, and Chrono/War Miner. If the opposing team is Yuri, do not destroy thier Slave Miners. Also, if they have captured a Tech Oil Derrick(s), do not destroy them. Just make it so they can get infantry. Then, have the tanks leave, but have infantry that can take out your enemy's infantry:
Yuri: Over 10+ Viruses
Allied: 2 Navy SEALs, Tanya, or over 10 Snipers
Soviet: Boris/over 7 Flak Troopers
As soon as the infantry come out of the Barracks, they will be slaughtered. Doing this for a long time will result in many kills. Also, go in a three player skirmish match and do this in one base. Then, do the same thing in another, but have over 10 Yuri Clones and a nearby Grinder. When the infantry exits the Barracks, you will Mind Control them. Send them into the Grinder for additional credits.
Get rid of trees for building
If trees are in the way of building, take them out with some tanks. It will take a bit, but they will be destroyed
Trees require five Grizzly, Rhino, or Laser Tank shots to be destroyed.
Build everything
Note: The following trick only works for Yuri's side. First, you must have two allies, one Soviet and one Allied. Next, build everything you can build including Cloning Vats. Train a Yuri Prime. Since you have Cloning Vats, you will have two. Send one to your Allied allies and use Force Control to take control of their Construction Yard (hold [Ctrl] and click on it). While the Yuri Prime is still controlling the Construction Yard, build every thing you can with the Allies. Then, repeat the entire process again with the other Yuri Prime on your allied Soviets.
Keep Construction Yard
In skirmish or multi-player mode, when you need a base and have a Yuri Prime, capture the Construction Yard, then click on it. After that, click anywhere on the map in the area. The vehicle is now permanently yours.
Devastating attacks
When playing as the Iraqis, build a Terrorist and an Ivan. Have the Ivan put a bomb on the Terrorist. Also try having a Demolition Truck as the Allied and Soviets. First, you need a Crazy Ivan and an IFV. Load your IFV with the Ivan and have it attack.
Get a Flak Track, five Conscripts, and a Crazy Ivan. Get Crazy Ivan to attack a Conscript. Make sure there is a bomb ticking above their heads and load it in the Flak Track. Do this again until all five are in the Flak Track then send it into the enemy base. When it is destroyed, there will be a big explosion which can take out Prism, Tesla, and Gatling Guns. This is a cheap method, as each Flak Track costs $500, the Conscripts cost $500, and an Ivan costs $600. If you buy lots, it works out to be cheaper than a Demolition Truck. Another trick is load a couple up and leave them between you and the enemy. If they approach to attack, the enemy will destroy them and be wiped out.
Destroy two vehicles at once
This trick requires a Magnetron and two other vehicles. First, align the vehicles so that all three are in a straight line. Next, activate the Magnetron so that it is targeting the vehicle farthest from it in the line. When the first vehicle is just about to pass over the second one, press S to stop the Magnetron. The first vehicle will fall on top of the second one, destroying them both. You can use this trick to kill infantry, and you will not lose the tank. Note: This trick may be difficult to complete.
Safe eradication
Have a Chrono Legionnaire attack something, then force fire ([Ctrl] + Left Mouse Button") on it until it is destroyed. They cannot repair buildings because of the effect.
Superpowered Tesla Coil
First, build a Tesla Coil, then build three to six Tesla Troopers. Move the Tesla Troopers close to the coil and they will zap it with their Tesla weapon. Doing this with three or more troopers increases the coil's range and power enough to destroy most units in one hit or so. Five of these super coils placed at the entrance of the base can stop nearly all small to medium assaults. This also keeps the coil online even if the power goes out. This trick also works with the Tesla Reactor and will bring your power level up by a few points, which is useful when building super weapons.
Get Tanks or Humans in your other team for the price of a Yuri
Have two teams in a skirmish (you and CPU). Train a Yuri Clone, then hold [Ctrl] and click on one of the Tanks or Humans on your CPU team. Release [Ctrl] and you should be able to move the tank or human around.