Mortal Kombat 11 – All fatalities and secret fatalities for all characters in the entire game, including Shao Kahn, Frost and Kronika. In the video below you can see both fatalities for all characters (standard and secret).
In total there are 25 characters and 50 fatalities in the game, for each character 2 fatalities. The first fatality is unlocked from the beginning. The second can be unlocked in the crypt by opening chests, or you can play AI matches.
You must complete both fatalities of each character to unlock the respective trophy or achievement.
Normally you do a fatality when you see the "Finish Him / Her" screen after defeating your opponent. Then you have to enter the correct key sequence. It is different for each character, in the "Learn" menu there is a fatality training mode.
Have you seen the Mortal Kombat 11 Trophies & Achievements? Here you can find all PS4 trophies, including tips and solutions.