The game starts with the player as a rookie under the command of Major Rodeschild, who is in command of a small unit of Proton soldiers defending the town of Rivageders from rapidly advancing Q-Stein forces under the command of Colonel Hoffman, a Brummbär self-propelled heavy assault gun with a bounce bomb launcher. Upon entering the town, Hoffmann destroys the Rivageders Clock Tower in a single shot. Rodeschild refuses to allow another retreat and commands that the line be held at Rivageders. The player and Rodeschild's other troops are tasked with destroying Hoffman's unit of Marder II tank destroyers. Hoffman can either be killed by the player or be allowed to live. If spared, he will call a retreat when enough of his troops have been killed. After Rivageders is free of Q-Stein forces, Major Rodeschild orders a quick response force be deployed to assist the Proton Civilian Resistance under heavy fire northeast of the town. The player is transported via Proton Huey dropships to the position of the resistance leader Jevons, who is barely holding on with just two troops left. The player and his allies quickly dispatch the attacking Q-Steins and the wave of reinforcements. If Colonel Hoffman was spared in the previous level, he must be killed in this one. Upon reaching victory, the player is given an option of which level to take next: go with the resistance to rescue Proton Army Lieutenant General Ahmadi from a flatbed truck transporting him to the brutal Q-Stein prison Camp Hascallasa, or equip himself with night operations kit and join Major Rodeschild for a stealthy night liberation of the capital city of the Proton Kingdom, Bacherit. Before choosing, however, the player can do a side mission set in a desert oasis; the oasis has been occupied by Q-Stein troops under the command of Captain Bergstrom, a Tiger II (Porsche turret) tank with a long-range cannon. The player must kill all Q-Stein troops, including Bergstrom.