Mission 11 - Harbinger of Oblivion | Achievements - Legacy of the Void SC II: Legacy of the Void Guide
Last update: 11 May 2016
Harbinger of Oblivion. Requires you to complete the mission on any difficulty level.
Stormcaller. Destroy 15 units using the psionic storm ability of high templar unit. A very simple challenge, all you need to do is use the ability few times at the beginning of the mission, before reaching Artanis, and few times later, for example while attacking one of the void crystals.
Hive Five. Kerrigan cannot lose more than three hives during the game on normal difficulty level. In theory a hard one, in practice the challenge requires only some good planning. Ignore the Xel'Naga vessels, focus on creating workers and improving the base, use the gathered resources to create a large army consisting of from 40 to 50 units and destroy all void crystals one after another. It is best to help zerg, as it will allow you to speed up the destruction and thus protect more hives.
Solo Operative, Right? Secure and turn off 2 void crystals with no help from Kerrigan while playing on high difficulty level. Only two abilities will be useful in this mission, orbital strike and deploy Fenix. Create more workers after obtaining control of the base and start producing units. Kerrigan will attack the crystal in point [V2] but she will not get through enemy defenses. Don't help her. Once you gather large enough forces, consisting of 20 and more units, attack the [V1] point. Clear the area and return to base. Do it before Kerrigan will manage to secure [V2]. Keep producing more units, especially archons and dragoons because you will have to fight many aerial units. Don't build the turrets, let your units take care of defense.
Gather your army until only two Kerrigan's bases remain. Gather the army in point [V1] and get from there to the stairs leading to [V4]. Destroy some enemy fortifications on your way. Make sure that you can afford both abilities and then walk upstairs. Bomb the enemy buildings using the orbital strike, summon Fenix and get through to the mission target. The enemy will have a massive army, but with the help of your hero you should be able to defeat it. After destroying the second building you will immediately receive the achievement, so don't worry if you will fail the mission. It won't matter.