To succeed, the objective must be satisfied before the time limit. Like Abduction missions from the previous game, multiple Guerilla Ops missions will appear at a time (usually between two and three, depending on the quantity of Dark Events, although one Guerilla Op is still possible in rare cases), but only one Guerilla Op may be completed at a time.
Guerilla Ops are a series of missions geared to countering ADVENT's Dark Events. 12.2.2 Extract VIP from ADVENT City/vehicle (non-concealed).12.2.1 Extract VIP from ADVENT City/Vehicle (concealed).9.2 Lost Towers Investigation (Operation Last Gift).9.1 Alien Nest Investigation (Operation Regal Beast).8.8 Alien Fortress Assault (Operation Leviathan).