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