S4 Humans:
~Double Blaster
~New Mech Suits/Bots, Kinda like the ones in Mechwarrior only with multiple las shots or somehing, 300hp (100 for human 200 for mech suit)
~Suicide Unit- Has C4 strapped to chest and blows up when he dies
~manned turrets(kinda like AntiAircraft guns)
S4 Aliens:
Advanced Dretch: 75 Hp,
Advanced Tyrant: Slower then normal tyrant, 4 barbs with damage radius, when dies- explodes into vat of acid, 600 hp
~All buildings can attack humans from a still position(acid attack) kinda like what the reactor/overmind does