In Career Mode, get 100% Audience Ranking in World Region; defeat the challenger Note: The game screen go blank and the game will become unplayable when you get to the World Title match with a 17th wrestler. Thus, you cannot unlock the 17th unlockable wrestler.

Wrestler	How to unlock
Andy Kaufman	Win World Title with 13 different wrestlers.
Big John Studd	Win World Title with 1 wrestler.
Bob Backlund	Win World Title with 15 different wrestlers.
British Bulldog	Win World Title with 8 different wrestlers.
Hacksaw Jim Duggan	Win World Title with 6 different wrestlers.
Ivan Koloff	Win World Title with 5 different wrestlers.
Nikolai Volkoff	Win World Title with 16 different wrestlers.
One Man Gang	Win World Title with 10 different wrestlers.
Rick Steiner	Win World Title with 11 different wrestlers.
Ricky "The Dragon" Steamboat	Win World Title with 9 different wrestlers.
Ricky Morton	Win World Title with 12 different wrestlers.
Robert Gibson	Win World Title with 2 different wrestlers.
Rocky Johnson	Win World Title with 3 different wrestlers.
Ted Dibiase	Win World Title with 14 different wrestlers.
Terry Funk	Win World Title with 4 different wrestlers.
The Iron Sheik	Win World Title with 7 different wrestlers.