In Mortal Kombat 11, there is an unlockable character called Frost. She is the main character that should be physically opened. All others are opened from the earliest starting point.
How would I open Frost? Play Chapter 4 in Story Mode and consistently pick Sub-Zero (an aggregate of 4 decisions in this part). On the off chance that you do that, you will hold up ice after the part!
Have you seen the Mortal Kombat 11 Trophies and Achievements? Here you can discover all PS4 trophies, including tips and arrangements.