As you fight your way through the alien infested palm forests of Galuga archipelago, running and wading as you shoot down brainwashed soldiers, alien creatures and turrets while avoiding ambushes and mortar fire, you cross a log bridge leading to a cemented clearing. There is a muddy path up ahead. The entire place has become eerily quiet. Suddenly, the silence is broken by mechanical sounds of motors and actuators. In front of you now stands a robotic monstrosity - an assault mobile spidal. It crawls into view on its four mechanical legs, charging up its six cannons.