Buitres sobre la ciudad (1980)

Merli, teamed with Mexican star Hugo Stiglitz as his photographer buddy, plays a journalist investigating the shady activities of the local Mafia. Eventually the shit hits the fan, and Merli is cornered and beaten for sticking his nose to close to the action. After his girlfriend is raped, Merli dishes out some vigilante justice and punches, shoots, and bitch slaps his way through the Mafia ranks.