If your both allies declar war on your allie and send spys into his buildings then allie again with him. | Submitted by CidHighwind If you play a multiplayer game online and you have teams (if he is a differnt side than you), have one of your allies make you a barracks and a war factory and put them in your base then declar war on him and take over the buildings with enginers and you do the same for him then when your done allie again. Later, if you capture the base completely (meaning all buildings) you will get the Yuri Prime. This is to train new units like the physic commando (he can use the mind control and plant C-4 on buildings). In Multiplayer or skirmish mode, use spies to infiltrate all enemy battle labs. Come in through the rear with a Tanya or a couple of attackers and do your worst. They will focus defensively on that area and will forget about the backdoors.
Often If you attack your enemy's base (in multiplayer) at the same place. Strategy Against Dosolators and Nuclear Power Plants.Stoping Weather, Nuke Silo, Chronosphere, & Iron Curtain Devices.