ok, so i beat the baron and i beat the Zpci dude with the armored wolf thingies, and im really really stuck on the Sniper, medic and the guy in red armor.
at first, attack the captain. then, the medic will put a shield on him. then hell become stunned for like 9 rounds. if the sniper gets crouch and lock and load, stun him. now you wanna focus on destroying the sniper. once you take out his shield, hes easy. then go for the medic. then just stun and attack the captain. its over when he reaches 500 health