The trainee hero u get in the start is the only hero ull ever need, a fully upgraded archer trained to fight flying units will do less damage than a mage with way less upgrades
xD after i wrote the previous comment, i made it all the way through :D get 2 laser turrets in the beginning, then upgrade ure main gun, repair drones buy more laser turrets, fighters, complete ure main gun, complete ure turrets, max ure repair drones (essential for the last fight) then max ure fighters
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