The title screen of this game credits the programming to 'Elmer Fudd'. If I'd had anything to do with it, I wouldn't want my real name made public either. This is a 1989 movie licence of the old school - i.e. it's a quick cash-in job where the programmers took a couple of popular game elements and bunged them together, adding a central sprite that looked a bit like the character from the film.
They doubtless sold millions. The fact that all the people who bought it went back to the shop the next day and said "Give me my money back, this is disgracefully slow and tedious crap with some of the dullest gameplay I've ever come across and music that I wouldn't feed to my cat" is neither here nor there. I'm not going to tell you any more - I don't want to get you interested in this garbage. Enough.
The graphical bit where Rambo loses energy to gradually become a skull is quite funny, but it's not worth eight quid.