Game: Bio Menace (Episode One: Dr. Mangle's Lab)

The object of the game is to control the main character Snake Logan through the levels of each episode killing monsters, avoiding traps, picking up powerups and bonus items and obtaining key items. Before he gets to the exit he is required to find a crystal shard or keycard. To obtain one he must either rescue a hostage, or kill boss monster. There are exceptions where he can exit without any key, hostage or boss encounter.
Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".