Devastators

Devastators (餓流禍) is a 1988 shoot 'em up arcade game by Konami.

Plot
Set in 1989, the player takes control of a mercenary duo known as the "Devastators", who are hired by a small undeveloped country to defend their land from a fanatical Middle East dictator threatening to conquer it.

Gameplay
The game is essentially a vertical shooter that goes forward only. The soldier walks straight into the scenery, with a perspective similar to Cabal or the "3D view" stages of Contra. Most of the missions require the player to kill as many enemies as possible for survival. The missions take place in jungles, desert and sea levels. At the end of each mission was a boss. Mainly the weapons were fairly authentic; the soldier was essentially armed with a machine gun and grenades. He can pick up rocket launchers along the way which could be used against heavy armored vehicles.

Additionally,the player(s) have a limited amount of time to complete each stage, otherwise the game will end automatically.