Death from Above (1995)

It is the year 3000, and humanity has been enslaved. After escaping a mining camp, you have traveled to the alien homeworld, armed with only a power suit and a laser blaster. Death from Above is a side-scrolling shooter, with an emphasis on quick reflexes and heavy firepower. Explore 16 free-roaming, non-linear levels, and fight over 40 different creatures with 5 weapons.