Kingpin: Final Crime is unofficial sequel to Kingpin: Life of Crime with new maps, cutscenes and sound.
Final Crime is a mod for Kingpin created by Method. It’s a new campaign that acts as unofficial sequel. It takes place right after you finish the original game. Blunt flew away on the helicopter, but promised to be back for Thug's ass. She knew that it's too risky to go to Crystal Palace, where Thug got all his boys, so she sent he gang, Dragons, to tear Radio City up, so Thug will have no choice but to find and stop Blunt. You start the game in the back of Crystal Palace and go through few levels, including "backyard" of Radio City, Sewers, Wharf and Blunt's Poison Mill.
Unzip the files to your Kingpin folder. Make a shortcut to kingpin.exe and add this to the Target line:
+developer 1 +game meth
example:
"C:\Program Files\Kingpin\kingpin.exe" +developer 1 +game meth
Use that shortcut to load the game, open the console and type "skill 2",
without the quotes. You can change the game skill from "skill 1" (easy),
"skill 2" (medium) and "skill 3" (hard).
Then type "map methcut" to start Kingpin: Final Crime.
I thought this was a whole game mod, but it turns out to be a reskin of a level in the original game