This mod for PC unlocks Kintaro, Goro and Shao Kahn.
Here is the link for how to intall and download it:
http://mortalkombatmods.com/mods/kharacters/mortal-kombat-komplete-edition-pc-playable-bosses
PC Specs:
Asus Rampage Formula
Intel Core 2 Quad Q9450 3,4GHz
8 GBytes DDR2 1020MHz
Radeon HD 6950 2GBytes GDDR5