Here is the full list of all 40 Attack on Titan 2 trophies - there are 20 bronze, 16 silver, 3 gold and 1 platinum.
Acquired all trophies.
Reached 100% gallery completion in Attack on Titan 2 / A.O.T. 2.
Leveled one character to max rank in Attack on Titan 2 / A.O.T. 2.
Avoided 100 Titan attacks.
Leveled all characters to max friendship in Attack on Titan 2 / A.O.T. 2.
Completed all Scout Missions in Attack on Titan 2 / A.O.T. 2.
Leveled the protagonist to max level in Attack on Titan 2 / A.O.T. 2.
Used 1,000 Wings of Freedom.
Completed all Story Mode Dire Eliminations.
Unlocked all characters in Attack on Titan 2 / A.O.T. 2.
Achieved a Battle Rating of S in all Story Mode episodes.
Saved 100 or more comrades.
Maxed out all training levels in Attack on Titan 2 / A.O.T. 2.
Completed 50% or more of the Scout Missions in Attack on Titan 2 / A.O.T. 2.
Leveled one character to max friendship in Attack on Titan 2 / A.O.T. 2.
Got 2,000 total body part destructions.
Completed your first Dire Elimination.
Completed the final chapter in Story Mode.
Completed 25% or more of the Scout Missions in Attack on Titan 2 / A.O.T. 2.
Had over 100 allies die.
Had over 100 allies join.
Reached 50% gallery completion in Attack on Titan 2 / A.O.T. 2.
Completed Story Mode Chapter 5.
Completed Story Mode Chapter 4.
Eliminated a total of 1,000 enemies.
Completed 100 Side Missions.
Sent 50 gifts.
Completed Story Mode Chapter 3.
Built 100 bases in battle.
Maxed out the Titan Research Room level in Attack on Titan 2 / A.O.T. 2.
Used more than 100,000 Regiment Funds in total.
Got selected as the top performer during training in Episode 1 of the Story Mode prologue.
Completed Story Mode Chapter 2.
Reached 25% gallery completion in Attack on Titan 2 / A.O.T. 2.
Eliminated a Titan with the Hook Drive.
Completed Story Mode Chapter 1.
Successfully completed a Sneak Attack.
Increased friendship rank.
Used a Buddy Action.
Achieved a Battle Rating of S in any episode.