What is a strategy to earn the best defense achievement in StarCraft 2?
I'm working my way through some of the missions to get the extra achievements and learn some skills in the process, but I'm already having a hard time on the "Zero Hour" mission when playing on Hard.
How do I destroy 4 Zerg Hatcheries on Hard difficulty?
Is it a matter of going in quickly when they haven't gotten the change to built Spine Crawlers and other resistance? And should I focus on getting more SCV to pay for multiple Barracks?