The Basic Strategies

"Rushing":
Historically called preemption and blitzkrieg. Rushes are generally made with only 2 or 3 smelters, weapons not exceeding EMP and Rail Gun or RPG, and rarely with the Eden colony.

"Conservative":
Generally thought of as the "middle path." Users of this strategy go for ore if overpowered, yet in good defensive position. Early attacking remains an option if the situation deems itself.

"Miners":
The longer the game, the better. Usually Miners will commence fortifications of their colony while building up smelters and mines for a deep, hardened attack.