This effectively puts XCOM on a very tight timer-they have to engage all the enemies on the map before six turns have passed, or the mission is almost certainly lost.Д®nemies which have been revealed will, for the most part, fight XCOM in their normal fashion. If green and yellow don't add up to six or more, the mission is lost. Green is saved, yellow is alive, red is killed. Once one civilian has been killed per turn, unrevealed squads will stop attempting to kill until next turn. It is possible for the aliens to miss however, if one unrevealed squad misses the next will then attempt to kill a civilian. This is extremely likely to succeed-Retaliation Strike civilians have only one hit point and, while they will attempt to seek cover and flee from aliens near them, are not very evasive. Retaliation Strikes are also the first place several aliens will be introduced, namely the Faceless and the Chryssalid.Д®very turn that an ADVENT troop squad remains unencountered by XCOM, it will select one civilian in the fog of war and attempt to kill it. These can be expected to be at rough technological parity with those in other concurrent encounters, but slightly more numerous or stronger, with emphasis on faster troops such as the Stun Lancer. Moving through the squares will not be enough-the trooper must stop and talk to the civilian to order them to safety.ДЄlso throughout the camp are ADVENT troops.

Civilians have a glowing blue circle around them encompassing a 3x3 grid, and moving an XCOM trooper into any of these squares, regardless of line of sight, will result in the civilian being saved and sent to the Firebrand dropship. It is required to save at least six of them or the mission will be failed, and ADVENT will wipe out the camp. Scattered throughout the settlement are civilians. Occasionally, settlements will feature explosive tanks or towers, which can be targeted for effect.ДЄll eight squares around this civilian, as well as the one next to the highlighted position and its equivalents on the other sides, will work. Here and there, permanent fires will have been started due to the ongoing destruction, effectively disabling areas of potential cover. Almost no structures in settlements will consist of more than one story, but there will be quite a few of them, along with other assorted debris to provide cover and break line of sight. The squad will arrive at an edge of the map, sometimes on a cliff, and have to make their way into the settlement. Retaliation Strikes take place in Resistance camps already under attack by ADVENT forces. Additionally, if a continent bonus involving that region had been achieved, it will be lost until the requirements are reestablished. Contact with the region will be lost and must be reestablished, any radio relays in the region will be destroyed, and the income of the region will be permanently reduced. However, a Dark Event, Resistance Informant, will advance the counter by two extra weeks if allowed to continue.ДЇailing or ignoring a Retaliation Strike will scatter the Resistance in that region of the world. The first Retaliation Strike will take place approximately at the end of the first month and subsequent ones will happen approximately every five weeks afterward.

Like the ADVENT Project incrementing, ADVENT Retaliation Strike missions happen on a timer, which can be viewed on the Dark Events screen.

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