Warlock: The Armageddon on VHS. Starring Julian Sands, Chris Young, Paula Marshall. Directed by Anthony Hickox. 1993.
From the VHS box:
When he comes… all Hell breaks loose.
He’s back and meaner than ever! Satan’s only son, the “Warlock,” is plotting even greater mayhem in this spine-tingling, pulse pounding shocker! The Warlock’s single goal is to free his father from the fiery chains that imprison him and unleash Satan’s wrath upon the world. The only ones who can prevent complete world destruction are two warriors who alone possess the supernatural powers to challenge the Warlock… and stop the inevitable Armageddon. they must outsmart and defeat the Warlock before the prophesied eclipse, sending Satan and his son back to Hell.
DVD upgrade: Warlock: The Armageddon