Here is the full list of all 51 Injustice: Gods Among Us Ultimate Edition (EU) trophies - there are 38 bronze, 10 silver, 2 gold and 1 platinum.
You've unlocked all Trophies!
Reach Level 100
Unlock everything in the Archives
Unlock a costume in the Archives
Unlock All costumes in the Archives
Complete 100% of Story Mode
Win all story mode minigames
Complete 50% of Story Mode
Defeat every Villain With Batman
Perform every level interaction once
Complete Classic Battle with all characters
Complete Battle Mode
Play 200 complete Online Matches
Win 100 complete Online Matches
Enter Online Practice with someone on your friends list
Vote Correctly in a KOTH match
Defeat a Survivor
Dethrone the King in an online match
Win 10 complete Ranked matches
Cause maximum damage in all Arenas (does not include Practice mode)
Win a single online match
Win 1 complete Ranked match
Complete All S.T.A.R. Lab Missions with 3 Stars
Beat All S.T.A.R. Lab Missions (Excluding DLC)
Get 100 Stars in S.T.A.R. Lab Mode
Get 3 stars on 1 S.T.A.R. Lab Mission
Complete 1 S.T.A.R. Lab Mission
Perform every special move of every character
Perform every Meter Burn special move of every character
Perform a 10 hit combo with every character
Perform every character's supermove
Complete Classic Battle with any character
Equip a new Character Portrait
Equip a new Icon
Equip a new Background Image
Win a match as Deathstroke without missing a shot (minimum 12 shots)
Win a match with Green Arrow using only arrows
Make a comeback when at low health (10% or less)
Knock opponent through all transitions across all levels
Send an opponent through all three Metropolis transitions in one fight
Reach Level 10
Win with Batman using every special move and his Supermove
Win a match with the super move of any character
Knock an opponent through a transition
Complete Tutorial
Win a Clash sequence with any character
Enter Practice Mode
View Your Hero Card
Win a multiplayer match with a timeout
Use every interactable and win in a multiplayer match
Perform 8 throws and win in a multiplayer match