The invasion should happen the same day and time it did before.ДЄlso worth experimenting is taking note of the soldiers in the room at the time. I had several exalt lasers sitting in a pile, and simply equipping those made the mission much easier than trying to do it with the base weaponry. As soon as you can (like after re-completing that mission), equip all of your other soldiers with stray weapon upgrades. It might be the final round of a previous mission. Go to the last saved game you have before the invasion. If you're having a really hard time with the mission, try this: This location is easy to defend, close to the entry-point of your reinforcements and doesn't require you to shift your position much when the entry-points of the aliens shift further to the back of the base.ДЄfter you defeated the first wave which comes down in the mech bay, the mission will get considerably easier, because from then on you will have time to prepare properly for the last waves to arrive. The best place to concentrate your forces are the catwalks on the upper level between command center and mech bay. It also allows you to hide from the Mechoids, because they can't climb ladders. This increases your hit chance and reduces that of the enemies. The first thing you should do is get on higher ground. The beginning of the mission is the most difficult part, because you will have to face some strong aliens which enter close without warning and your force is limited. When one of your soldiers ends up in a bad position, move a guard into an even worse position so the aliens kill him first. When they used up their grenades, their best use is as cannon fodder to distract the aliens from your real soldiers. There is no penalty for causing colateral damage to the base interior, so there is no reason to worry about breaking stuff.

Use them soon - they do about as much damage as their assault rifles, but never miss and destroy the enemies cover. Their strongest weapon are the two grenades each of them carries. The guards have normal assault rifles, terrible accuracy, only 5 hit points and tend to panic quickly, so they aren't much of a help. The map layout of this mission has nothing to do with how you built your base. When you already lost some guards, they will be accompanied by up to two new ones. That means how difficult this mission is depends on how much the random number god hates you today.Д®very even round, a new one of your soldiers will enter the map. When you have bad luck, you get killer-waves consisting mostly of Cyberdisks and Mechoids shielded by Sectoid Commanders. When you are lucky, you face lots of Sectoids and Floaters. The aliens which enter the base with each wave are randomized. You will start with your first three soldiers and three guards in the command center.Д®very odd round, a new wave of aliens will spawn. Otherwise you might have to face some strong aliens without armor and with conventional guns, which is not fun. For that reason you should always make sure that these six soldiers always have at least decent equipment, even when you don't want to take them on missions right now. This mission starts without a warning and you have to fight with the first six of your soldiers with whatever gear they have equipped right now.

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