Shoot, upgrade, conquer enemies, defeat bosses, acquire achievements, collect gems, all in an attempt to save yourself and your gun from the clutches of the evil Professor.
Save your city from legions of dangerous machines, piloting your own mech suit. Hold back the machines long enough for the EMP to be built and save the day.
You are attacked by a horde of monsters from underworld. Once again, you will have to gather resources to create and upgrade units and defend your country.
