richie rich

i can't track this game down anywhere with my limited info from memory (A500+, side scrolling)
You were basically an american commando (70's or 80's era i think) you picked your weapons at start of game including an m60 machine gun, grenades, kalashnikov etc.
you were then dropped from helicopter onto screen you moved to the right shooting as enemies appeared, you could also track back left if needed you could enter huts/buildings in the background. pretty sure you had a timer for each mission you had to beat.
cant remember objectives other then kill things, you were awarded medals at the end of the mission depending on how well you did and a purple heart if you were killed.

this has been bugging me and no matter what list of amiga games i go through none of the names jogs my memory.
any help appreciated