The Crucible | Zerus missions SC II: HotS Guide
Last update: 11 May 2016
Primary Objectives:
Reach the secret brooding pool
Kerrigan must survive
The Kerigan chrysalis must survive
Secondary Objectives:
Kill tyranozon
Reward for the completion of the Primary Objectives:
New unit: Swarm Host
+10 to Kerrigan's level
Reward for the completion of the Secondary Objective:
+1 to Kerrigan's level
Right at the beginning of the mission, you will have a group of swarm hosts. These units attack only when they are buried in the ground - that is why you should bury them in the designated spot [1]. After you fend the enemy off, you can go to the control point [2] to initiate Kerrigan's transformation.
You are now in command of a cluster of hives. I recommend that you deploy the units in [2] and [3]. It is best to put five of them in each area, where they will be accompanied by a group of 10 zerglings positioned right next to the swarm hosts (they will attack the enemy after they cut through the locust). You should also deploy hydralisks there, 15 at each side. It is also a good idea to have a few swarm queens (to heal the swarm) and a group of around 15 mutalisks to protect the chrysalis from possible aerial attacks, and to block the passage in [4].
For the protection of the base, you should use all means available to you. Soon after the mission starts, you will be granted the possibility of creating primal locust - you can use it each time when a larger group of primal zergs arrives. Apart from that, you can build a second base in [5], but it is going to be constantly exposed to enemy attacks.
In the meantime, you can send the mutalisks to complete the secondary objective in [A]. The tyranozon is very much immune to attacks and that is why it is possible that you will have to launch several raids. If your mutalisks lose most of their health points, you can withdraw them from the battlefield, and wait for them to heal. When it comes to this, a mutation available onboard the Leviathan is very helpful. The mutation allows them to heal almost instantaneously once they are outside of the battlefield.
Towards the end of the transformation process, the attacks will increase in frequency. The enemy will constantly be trying to destroy the stony barrier [4] and will be sending big amounts of airborne units. I recommend that you save up one creation of the primal locust for the last several dozens of Kerrigan's transformation process.