Chemical Warfare

A crazed Middle Eastern dictator is manufacturing chemical weapons at a secret military installation hidden in the desert. Your mission is to infiltrate this facility and find a computer disk that contains vital information about the chemical weapons program.
Press "Enter", then hit the "I" key to pick up the machine gun. When you approach an object that can be picked up and carried in your inventory, an image of the object is displayed in the Indicator Window on the Game Screen. Hit the "I" Key to pick up an object and add it to your inventory. Use the "S" Key and the arrow keys, followed by the "ENTER" Key to discard an object from your inventory.
Each level of the game contains a number of "enemy guards" (up to 30). These guards have 2 different modes of behavior. Some of them are stationery guards; they stay in one place and only react when the player comes into range. The vast majority, however, are "roaming" guards; they move around in random patterns within certain rooms or areas. This makes it hard to anticipate exactly where these guards will be encountered at any given time and makes the game slightly different each time you play. The guards become increasingly more difficult to kill as you move from one level to the next.
The ones on levels 1 and 2 (green uniforms) have no protective armor and can be killed by one blow from the shotgun or a couple of rounds from the machine gun. The guards on the deepest level have maximum armor protection and can sustain several direct blows from the shotgun or a dozen or more rounds from the machine gun. All guards, however, are equally susceptible to gas, explosions, and chemical slime.

What is abandonware ?