Resistance Comms - The installation increases the amount of resistance contacts, enabling you to have better control over the situation on the world map, as well as increase the amount of acquired resources.Start with the upgrade that increases the amount of squad mates (from 4 to 6) and continue by buying upgrades for each class to increase their efficiency. Guerilla Tactics School - Offers upgrades for your soldiers.You can send an engineer that will increase the amount of generated energy, as well as make room for a second engineer or increase the overall amount of received energy. Power Relay - Powers the remaining rooms.Similarly to the previous entry in the series, there is a number of installations that should be constructed at the beginning of each game. Resistance Ring is one of the basic outposts