https://darth-azrael.tumblr.com/post/188948268405/humor-y-videojuegos-lethal-weapon-año-1992
Lethal Weapon is a side-scrolling action game released for the Nintendo in 1992 which was a pretty late release for that system. Despite the name, it is really based on the first three Lethal Weapon movies, not just the first one.

As far as games based on movies go, this one is probably better than most. The graphics and music are excellent. However, it is not without its drawbacks. The biggest drawback is the fact that this game is really, really hard. Expert gamers intent on their next harder challenge may enjoy this one but more casual gamers will just find themselves frustrated.

Lethal Weapon consists of three levels each of which contains three stages. You use both the main characters from the movie, Murtaugh and Riggs, and swap between them throughout the course of the game. While a character is not being used, he gains back some of his health. The characters have slight differences. Riggs can jump higher, pick up knives and has a special high kick attack. Murtaugh can pick up crates and has a stronger punch. Some other items can be picked up along the way as well, including grenades.

In addition to the NES version, there were also a number of other versions. The Game Boy version was essentially a port of the NES version but with a slightly cut down number of stages. There was another version of Lethal Weapon developed and released for the Super Nintendo, Atari ST, Amiga, Commodore 64 and DOS based PCs but this version is substantially different from the one released for the NES and Game Boy.

Lethal Weapon has not been re-released and probably won’t given that it is a movie license (though I hear another movie is coming). While it is a nice looking and sounding game on the NES, it is hard to recommend because of its difficulty. However, if you are a masochist or a really big fan of Lethal Weapon, it might be worth picking up. Otherwise, give it a try on an emulator and see how you like it.
Screen shots above are from the NES version of the game.