Run and Kill (1993)

Original title: 烏鼠機密檔案

A man (Fatty) returns home to find his wife with another man. He goes to a bar and begins to drink, waking up the next day to find that he owes a mafioso money for killing his wife. Not wanting to pay the money, he enlists a malitia organization only to find the leader a psychopath who seeks revenge on his brother, who the mafioso tortured. The psycho blames Fatty, and kills his mother and young daughter. Fatty must kill the psycho to survive.