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