Here is the full list of all 50 Mortal Kombat 1 achievements.
Perform 20 Different Fatalities
Perform 10 Different Brutalities
Komplete Mastery With 1 Kameo Character
Watch The Kredits
Defeat The Final Boss Of An Invasions Season
Reach Invasions Level 20
Use 10 Konsumables
Use 10 Different Kameo Characters
Perform 10 Different Kameo Fatalities
Komplete 5 Unique Test Your Might Encounters
Equip 3 Different Relics
Reach Invasions Level 10
Trade For An Item From An Outworld Shop
Spend 10,000 Seasonal Kredits
Spend 10,000 Koins On The Shrine
Defeat A Major Boss In Invasions
Equip A Relic
Spill 5,000 Pints Of Blood
Reach Invasions Level 5
Trade For An Item From An Earthrealm Shop
Defeat A Mini Boss In Invasions
Survive An Ambush
Recharge A Talisman
Komplete 25 Unique Encounters
Use A Talisman 10 Times
Unlock A Secret Fight
Komplete Cage Mansion Tutorial
Change Your Kombat Kard Player Module
Komplete 3 Daily Quests
Klear An Obstruction In Invasions
Komplete A Survival Encounter
Deal 10,000 Damage To Opponents
Forge A Talisman
Use A Talisman
Komplete A Weekly Quest
Komplete 5 Unique Encounters
Komplete The Basic Tutorial
Use A Key
Komplete 100% Of Story Mode
Komplete 50% Of Story Mode
Spend A Total Of 1 Hour In Practice
Komplete Chapter 15 Twice
Play 5 Kombat League Sets
Komplete A Klassic Tower With 5 Different Characters
Dethrone A King
Komplete Mastery With 5 Kameo Characters
Komplete A Titan Battle
Obtain A Total Score Of 5,000,000 In Gateway Towers
Unlock 10 Tower Endings
Perform A Taunt Without Being Interrupted During An Online Match