If you don't have your special move and you need it just pause the game.As the game is paused your special goes up.This helps a lot in times with many people.
all i did was to play fair and i was always in the upper hand but did not finish the game cuz it took a long time. i think the worst special is that healing special because it also heals ur opponent when they are at the same age as urs
also when units are attaking you,pressing space repetativly will help let your turrets kill them without you getting hit this works on all ranged units and mellee units except the rifle men who will fire anyway so if theyre attacking use units or speacial when training units pause the game and they will train without your enemy advancing-hope this all helps