It's a nightmare. You are trapped in an abandoned mine with an injured comrade at your side against God-knows-what. Make your stand, get out alive. Three words of advice: shoot to kill. These things are not human, they are monsters..
A special Unit has been sent to Mars to prevent a looming threat. By controlling one of the combat robots, your Unit will have to go through the series of missions; destroying a mob of enemies, earning awards and improving your own robot.