Sgt. Helmet Zero

Sergeant Helmet Zero is a mercenary working for fame and glory, and he is called to the far away land of Kartamocia to free the 40 refugees held hostage by the fallen tyrants' security system.

The game itself is a static screen platformer and shooter. You can fire you machine gun rapidly and have to rescue all the people, while keeping your health above 0 percent. Monsters spawn continuously and turrets fire at you.