You unlock new characters by completing the game's story mode, finishing the Towers of Time, or through specific challenges in the game. Each method provides different opportunities to access unique fighters.

Fatalities are finishing moves that can be executed at the end of a match. To perform a Fatality, you need to be at the correct distance from your opponent and then input the specific button combination for that character.

Practice is key to improving in Mortal Kombat. Use the training mode to learn combos and timing. Study the moves of your opponents and watch high-level gameplay to gain insights into effective strategies.

To access customization, navigate to the 'Character' menu. Select the character you wish to customize, then choose 'Customize.' Here you can change skins, gear, and abilities to tailor your character to your play style.

Performing a Combo involves executing a series of specific moves in quick succession. Here are the steps: 1. Choose your character and practice in the training mode. 2. Learn your character’s move list. 3. Experiment with different combinations. 4. Execute the combo during a match while timing your moves accurately.