Red Alert 2 - Across The Valley (Extra Hard) 

There are several popular strategies that can be effective when playing against aggressive Soviet CPU players: 1, Defend and Counterattack: Build a strong defensive line to protect your base while simultaneously preparing a counterattack to push back the Soviet forces. This strategy requires a balance between defense and offense. 2, Economic Expansion: Focus on expanding your economy by capturing additional resource points and constructing more production facilities. This will allow you to outpace the Soviet player in terms of resources and unit production.

@@Yuri-RevengeTV I don't usually have too many problems defending my own base, usually my problem is that they kill the other enemies before I can "long-play" them the way I want, but it's annoying to need to rush just to defend the other enemies.