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Unsealing the Past is a mission in the campaign of Legacy of the Void, and the second mission in the Purifier storyline.

History[]

Background[]

"History has shown the Purifiers cannot be controlled, Artanis."
"They do not have to be. These personalities, like I, will have free will."

- Grand Preserver Rohana and Fenix(src)

After some deliberation, Hierarch Artanis decided that the ancient Purifiers who had been sealed away on Cybros needed to be reactivated. He thought that with some convincing, they would help him in the war against Amon just as Fenix had. Grand Preserver Rohana was vocally opposed, but Artanis went ahead with the operation.

Cybros was in orbit above Endion. On the surface several stasis locks shielded Cybros, and would have to be deactivated in order to reactivate the purifiers. Unfortunately, a large contingent of Amon's zerg broods had infested Endion.[1]

Mission[]

SpearofAdunCybrosEndion SC2-LotV Cine1

Arrival at Endion

Artanis and his forces arrived on the surface to deactivate the stasis field generators. Phase-smith Karax discovered the locks could only be unsealed through a device called the Megalith, which would have to be guided to each stasis lock. Unfortunately, the forests were infested with zerg. Karax activated the facility's colossi in order to cover the Megalith as it moved.

Karax uncovered several power cores of incredible size, constructed with solarite components, that would be value for the Spear of Adun's solar core. The Daelaam forces pushed through reinforcing zerg numbers, but eventually the Megalith was escorted to the last lock, freeing Cybros from stasis. Artanis recalled his forces and made his move to Cybros.[1]

Walkthrough[]

The goal of this mission is to escort the Megalith to the stasis locks, through heavy zerg defenses. The Megalith is not unarmed, and will fire thermal lances at any zerg it comes across. However, it is still fragile, and cannot be path blocked, so even if the player lacks forces it will move on without them.

Colossi are the key to this mission, as is using their ability to scale cliffs and attack out of range of the zerg. However, colossi are fragile, and other forces are necessary to provide a buffer for them. Dragoons, immortals, and sentinels are beneficial here, as they are durable yet high damage and can help take fire for the colossi as they burn through enemy defenses. The bonus objectives are lightly defended but may take some effort to get as only stalkers and colossi can reach them, so it is best to wait until the Megalith is in stasis before going after them.

Void rays will make short work of this mission as not only they have terrain advantage just as colossi, but also untouchable by the major of enemy forces and outrange their static defenses. They can also easily snipe the bonus objectives and lairs for achivements.

As the Megalith always get fully repaired after each lock, the player may let it clear the way with minimal support at the early part of its journey, buying a great amount of time to build up.

For the "Termination Protocols" achievement, the player must make the most of the stasis time and constantly be pushing through the zerg's defenses. These lairs are often hidden to the side of the attack lanes and are well defended, but provided that durable units are constantly being made alongside colossi, the player should be able to destroy them with ease. Spear of Adun abilities like solar lance and time stop will help immensely in pushing through the zerg defenses quickly.

Starcraft_2_UNSEALING_THE_PAST_-_Brutal_Guide_-_All_Achievements!

Starcraft 2 UNSEALING THE PAST - Brutal Guide - All Achievements!

Achievements[]

UnsealingThePast SC2-LotV AchieveIcon1 Unsealing the Past
Points

10 Achievement SC2 Game1

Criteria

Complete the “Unsealing the Past” mission in the Legacy of the Void campaign.

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UnsealingThePast SC2-LotV AchieveIcon3 Brood War
Points

10 Achievement SC2 Game1

Criteria

Destroy all Zerg structures in the “Unsealing the Past” mission on Normal difficulty.

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UnsealingThePast SC2-LotV AchieveIcon2 Pest Control
Points

10 Achievement SC2 Game1

Criteria

Seal all caves with rocks in the “Unsealing the Past” mission less than 40 seconds after Zerg begin to emerge from them.

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UnsealingThePast SC2-LotV MasteryAchieveIcon Termination Protocols
Points

10 Achievement SC2 Game1

Criteria

Destroy all Zerg Lairs in the “Unsealing the Past” mission before the Megalith reaches the fourth Stasis Lock on Hard difficulty.

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Legacy10 SC2AchiveImage I've Fallen and I Can't Shoot Up
Points

10 Achievement SC2 Game1

Criteria

Complete the "Unsealing the Past" mission by construction only Probes and Colossus on Normal difficulty.

Notes

A reference to the famous advertising catchphrase for emergency services "I've fallen and I can't get up!"

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Trivia[]

  • This mission hearkens to the plot of Star Wars: Episode VI - Return of the Jedi, and takes the general theme of disabling the shield generator for an orbiting battlestation above a forest moon, both battlestations having the ability to destroy/purify a world.
  • A group of dancing creatures similar to Ewoks from the aforementioned Star Wars movie (named Moopy in the map editor) can be found in the southeastern corner of the map.[2] Another one can be found hiding behind a tree in the northwestern corner of the map, not far from him there is a small fireplace.
  • A zerg unit, resembling a primal ultralisk, named Indomilisk Rex can be found to the left of the northeastern corner of the map, it is inside energized walls and its description says it is an enhanced strain. It is a reference to Jurassic World's Indominus Rex.

References[]

  1. 1.0 1.1 Blizzard Entertainment. StarCraft II: Legacy of the Void. (Activision Blizzard). PC. Mission: Legacy of the Void, Unsealing the Past (in English). 2015-11-10.
  2. LOTV Unsealing the Past Ewok easter egg Youtube. Accessed 2015-11-24.
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