General Strategies and Tactics

Knowing Your Upgrades
A key strategy is to know what to upgrade first and when to upgrade it. A general rule is to always upgrade weapon damage first and foremost. Weapon damage tends to yield a significant boost to your fighting forces. Armor upgrades, on the other hand, offer but fractional resistance against attacks. Try and research all three levels of weapons upgrades before going on to research armor. The Protoss should research their plasma shield upgrade last, if at all.

Weapon and armor upgrades are extremely time-consuming. This does not mean you should begin researching them right away. Since damage and defense upgrades are expensive, yet only significant when those units who benefit from them are deployed in great numbers, you must resist the urge to begin upgrading until your garrison is firmly established, and you can afford to upgrade without cutting into your unit production resources. Do not even establish the structure required for upgrading weapons until your position is fortified.

Protoss Zealots with third-level weapons and Leg Enhancements become ruthless, efficient killing machines.