Here is the full list of all 50 Injustice: Gods Among Us Ultimate Edition achievements.
Complete 100% of Story Mode
Complete 50% of Story Mode
Cause maximum damage in all Arenas (does not include Practice mode)
Vote Correctly in a KOTH match
Win 100 complete Online Matches
Play 200 complete Online Matches
Win 10 complete Ranked matches
Win 1 complete Ranked match
Perform a 10 hit combo with every character
Complete Classic Battle with any character
Perform every character's supermove
Unlock a costume in the Archives
Unlock All costumes in the Archives
Make a comeback when at low health (10% or less)
Win a match as Deathstroke without missing a shot (minimum 12 shots)
Win a Clash sequence with any character
Win a match with Green Arrow using only arrows
Get 3 stars on 1 S.T.A.R. Lab Mission
Complete 1 S.T.A.R. Lab Mission
Complete Tutorial
Knock opponent through all transitions across all levels
Reach Level 10
Win with Batman using every special move and his Supermove
Win a match with the super move of any character
Equip a new Background Image
Equip a new Icon
Equip a new Character Portrait
View Your Hero Card
Use every interactable and win in a multiplayer match
Defeat a Survivor
Send an opponent through all three Metropolis transitions in one fight
Dethrone the King in an online match
Knock an opponent through a transition
Win a multiplayer match with a timeout
Perform 8 throws and win in a multiplayer match
Win a single online match
Enter Online Practice with someone on your friends list
Enter Practice Mode
Complete Classic Battle with all characters
Complete Battle Mode
Beat All S.T.A.R. Lab Missions (Excluding DLC)
Win all story mode minigames
Reach Level 100
Get 100 Stars in S.T.A.R. Lab Mode
Complete All S.T.A.R. Lab Missions with 3 Stars
Perform every special move of every character
Perform every Meter Burn special move of every character
Perform every level interaction once
Defeat every Villain With Batman
Unlock everything in the Archives