-+- 4.2. Chapter II: Overmind -+- [4200]

Create a Spawning Pool. Begin by sending your starting Drones to gather resources. Select the larvae and create a few more Drones. Have at least five Drones on minerals before you build your Spawning Pool. Create Overlords to compensate for control (Overlords increase your unit capacity). Once you finish that, you can create Zerglings. Note that you lose a Drone once it morphs into a structure.

Create a Hydralisk Den. Select another Drone and have it morph into an Extractor (an Extractor gathers Vespene Gas). Put one or two more Drones on Vespene Gas gathering. Build a Hydralisk Den when you attain enough resources.

Destroy the Terran encampment. The Terran base is to the northeast. Leave a few Zerglings back at the Chrysalis and build up a force of Zerglings and Hydralisks. Morph the Creep Colony near the Chrysalis into a Sunken Colony for defense against ground troops. You can also build an Evolution Chamber to upgrade your Zerg attacks. Create a good attack group of about 24 Zerglings, with a few Hydralisks for support. Move your force east to find a small fortification consisting of a Barracks, some Missile Turrets, and a good deal of infantry. Focus on eliminating the infantry first. Goliaths should also move in to cause some trouble. Destroy the Barracks and reinforce your current forces with a few more Zerglings. Move the force north to the main base. Destroy the defending units first and then work on dismantling the remainder of the base. There's a Starport you need to also eliminate to the west. Once the Terran forces have been dispatched, the mission will end.

Bring the Chrysalis to the beacon. Send a unit back toward the Chrysalis to gain control of the six Hunter Killers there. Hunter Killers are essentially powered-up Hydralisks and cannot be re-created if killed.

Begin setting up your base. Turn the single Creep Colony you start with into a Sunken Colony and begin pumping out Drones. Put an Extractor on top of the Vespene Gas geyser to the north. Group your Hunter Killers and scout the area around your base, eliminating scattered Protoss forces.

Prepare for Protoss attacks. You might consider putting up a few more Sunken Colonies. Get up two Evolution Chambers and start upgrading your units' weapons and carapaces. Transform one of your Hatcheries into a Lair so you can access the Spire building. Build a Hydralisk Den and upgrade Muscular Augments and Grooved Spines. Research Metabolic Boost at the Spawning Pool.

Destroy the Protoss forces. The main Protoss base is at the southwest end of the map. Rely on your Hunter Killers, backed up by a few Hydralisks, to destroy Protoss fortifications. Prioritize Photon Cannons first, then eliminate other attacking units. A good force of about 25+ Zerglings backed up by Hydralisks and Hunter Killers can destroy the Protoss base. Prioritize Photon Cannons and try to eliminate Gateways. Have your Hydralisks target air units and Zerglings swarm ground units.

Transport the Chrysalis. Once the area is clear of immediate threats, have a Drone transport the Chrysalis to the beacon.