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