Successfully complete Challenge Tower Level 300 to unlock Mileena's Fleshpit costume and get the '!' achievement. Successfully complete Chapter 16 in Story mode to unlock Quan Chi. Successfully complete Chapter 13 in Story mode to unlock Cyber Sub-Zero. Some codes require both players to input the code, while others work with just one player entering it. Note: Player one enters the first three digits and player two enters the last three digits of the code. Kombat codesĮnter one of the following cheat codes at the versus loading screen during a two player match to activate the corresponding cheat function. Note: This game is also known as Mortal Kombat 9.