Here is the full list of all 58 Mortal Kombat 11 achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Komplete the Novice, Warrior, or Champion Klassic Towers with 10 different kharacters
Defeat an opponent as Bug-Vorah
Perform 2 different FATALITIES with D'Vorah
Perform 2 different FATALITIES with Liu Kang
Perform 2 different FATALITIES with Kung Lao
Perform 2 different FATALITIES with Geras
Perform 2 different FATALITIES with Kitana
Perform 2 different FATALITIES with Kollector
Perform 2 different FATALITIES with Erron Black
Perform 2 different FATALITIES with Cetrion
Play 50 Kasual Versus matches
Pay 100 total respect points in King of the Hill
Perform 2 different FATALITIES with Kotal Kahn
Perform 2 different FATALITIES with Kano
Komplete 250 Towers
Use 100 konsumables
Perform 2 different FATALITIES with Cassie Cage
Perform 30 different FATALITIES
Perform 2 different FATALITIES with Jacqui Briggs
Play 25 AI Battle Simulator sets
Perform 2 different FATALITIES with Sub-Zero
Perform 2 different FATALITIES with Kabal
Perform 100 BRUTALITIES
Perform 2 different FATALITIES with Johnny Cage
Komplete 125 Towers
Use 50 Konsumables
Flip Stance 50 times during a match
Perform 2 different FATALITIES with Jade
Perform 2 different FATALITIES with Baraka
Perform 2 different FATALITIES with Frost
Spend 50,000 koins in the Naknadan shrine
Perform 2 different FATALITIES with Sonya
Perform 2 different FATALITIES with Scorpion
Play a Group Battle with 2 other players
Perform 15 different FATALITIES
Play 10 AI Battle Simulator sets
Equip 5 different character victories
Equip 5 different character intros
Spear 50 hanging bodies in the Krypt
Impale a head in the warrior shrine
Duck 100 times during a match
Perform 25 BRUTALITIES
Perform 2 different FATALITIES with Raiden
Perform 2 different FATALITIES with Noob
Open 200 Krypt chests
Perform 2 different FATALITIES with Jax
Show MERCY 10 times
Komplete a Novice, Warrior, or Champion Klassic Tower once
Spill 10,000 pints of blood
Perform 2 different FATALITIES with Skarlet
Reach The Kredits
Komplete Story Mode
Komplete 50% of Story Mode
Run 5 miles in the Krypt
Hit the Gong in the Krypt
Komplete all Strategy Tutorials
Komplete all Advanced Tutorials
Komplete all Basics Tutorials