Safe Haven

The Protoss have claimed that the new colony of Haven is infested by the Zerg. You have the choice of stopping the Protoss from purging the colony, or aid them by purging the Zerg yourself. Safe Haven is the resulting mission of defying the Protoss.

Your main goal is to destroy the purifier mothership. However, it has too strong a shielding system to attack directly. Instead, you'll need to destroy the three Protoss nexuses that power the purifier's shields. Start by building two barracks, a factory, and two starports. The Protoss mainly use an air force of void rays and carriers so you'll need strong anti-air units to combat them. Marines and medics will serve as basic infantry, and goliaths are a good pick to support them. However, your main focus should be the new vikings. They are your strongest air-to-air option and can transform into a ground unit to combat zealots.

Five vikings and around ten infantry are a good start for storming each nexus. The three nexuses are only lightly guarded and easy to destroy. Keep in mind though that these bases are producing units. Instead of keeping their bases safe, the Protoss are directly attacking the colony transports. If you are signaled that these transports are under attack, break off your assault and intercept the Protoss army. When the colonies are safe, return to destroying each Protoss nexus. Once the purifier has lost its shields, it's little match for a full viking counterattack.