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