For those of you as overwhelmed by the sheer amount of places to put towers, try this: concentrate defenses either around the top or around your base. Missile towers at the bottom.
Random tip: Have entropy alien for strong knockback-melee team, e.g earth shaker + mechanodragon.
Scarface protects a range crew due to his knockback, would recommend with soul seeker, shadow dragon + chakra or shadowkill (& possibly mechanodragon)
Iv'e got a glitch, my guys just won't stop running right, even when they reach enemy barracks and there's no other soldiers they won't attack the statue but keep running and getting nowhere.