Outbreak (Achievements) | Campaign - Colonist missions SC II: WoL Guide
Last update: 11 May 2016
Outbreak:
Cleanse the infestation (destroy 144 infected buildings), Kill the Infestors (2).
28 Minutes Later:
On normal, you won't have any problems with this mission. Train anything you can and once the sun comes up split your army into two squads and go hunting. Let one of the squads clean the left side of the map and leave the right side to the other one. Return to base and man the bunkers before the sun falls down again. You should also train new units during the day. Repeat this scheme until you succeed. I freed the region before the 4th night began, so there's no need to haste.
Army of Darkness:
It won't be as easy this time. The level went up and additionally you have to act on open terrain during the night, which is equal to being annihilated. You'd need to have a powerful military force at your disposal to overpower the enemy and complete the mission in a classical way.
Above all, once you find yourself nearby an infected structure during the night, infected Terrans will immediately surround you. More will keep on coming and eventually you will be ripped to shreds. You can however, use a certain trick.
Don't destroy the buildings during the day - attack them until their health reaches the red level and one shot is enough to destroy them completely (you need to have full control over your units). Infected buildings don't recover or lose health, so you can return to destroying them anytime, even on the next day.
Once the sun sets down, you should be right in the middle of the deteriorated base to quickly destroy the buildings - the locals will start appearing instantly and your units may get annihilated (take many medics). Plan the action precisely, as you can try to complete the achievement in one night (hard, but possible) or split the whole thing into a couple phases. In the second case, be sure to keep an eye on the defence of your own camp.
The achievement can be completed during the mission, you don't have to finish it. The demolition-oriented Reapers can make your life much easier. You gain access to them after completing The Devil's Playground mission.