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