You are a giant armored robot, and you must shoot all that attack you. There are many upgrades and many possible kits to use. Play through all 10 levels.
Defend your fortress from the oncoming enemy waves. Place turrets in locations of your choice on your fortress, creating the best defense possible to withhold even the greatest of attacks.
Take to the air in the meanest Helicopter brawl around. Deliver your own patented brand of Justice to the criminals whom have invaded the skies of your fair city.
After a successful teleport, our hero ends up on the basement level of AS7 medical research facility. He finds new challenges and evidence of resistance, but still no survivors. The only ones alive are the undead.