Srewoprepus! - Use all the powers of the heroes.
Who's going to pay for that? - Destroy 350 objects.
Maneuver 7! - Activate Squad Boost 20 times.
Ka-Pow! - Defeat the first 15 enemies.
Hitting Henchmen - Defeat 200 enemies.
Sidekick - Reach level 10.
Superhero - Reach level 20.
Justice Partners - Complete 1 mission co-op mode.
Justice Allies - Complete 5 missions co-op mode.
Souvenir! - Get half the Dioramas.
Collection - Get all the Dioramas.
The Quest for Roy Harper - Get all Red Arrow Journals.
Sunday Best - Collect half of the Alternate Costumes.
Mardi Gras - Collect all the Alternate Costumes.
Black Canary sales! - Buy half of the enhancements.
Training Room - Complete 1 challenge.
Staying Whelmed - Complete half of the challenges.
No Match, not even in Cadmus - Complete all challenges.
Challenge Master - Get 50% A Grades in YJ Challenges.
Apple of Black Canary's eye - Get all A Grades in YJ Challenges.
Winning Streak - Answer 5 Young Justice Trivia questions correctly in a row.
Trivia Apprentice - Reach a Score of 500 in the Young Justice Trivia.
Trivia Expert - Reach a Score of 1000 in the Young Justice Trivia.
Daddy's Little Girl - Defeat Cheshire.
Match Day - Defeat Sportmaster.
Cold War - Defeat Killer Frost.
Tag Team - Defeat Icicle Jr and Sportmaster.
Welcome to la jungla - Defeat Bane.
Secrets from the Deep - Defeat Black Manta.
Twisted Mind - Defeat Psimon.
Riddle me this! - Defeat The Riddler.
Busted Block - Defeat Blockbuster.
Art Preservation Society - Don't break any Statue in the Museum Stage during "A Hostage Crisis".
Hurry Up! - Escape the Avalanche Stage during "Go with the Flow" in less than 5 minutes.
It's a trap! - Avoid damage from the spike trap in Atabey's Temple Stage during "The Goddess Shrine".
One with the Shadows - Don't be spotted by any searchlight in Gotham Docks Warehouse stage during Hometown.
Hide and Seek - Don't activate the Statues in The Warrior's Path Stage during "Tag Team".
Ready for Spring Break - Obtain A Grades in half of the Missions.
Graduate with Honors - Obtain A Grades in all Missions.
No room in Belle Reve - Defeat 500 enemies.
Justice League Member - Reach level 40.
Justice Team - Complete 10 missions co-op mode.
Induction Party - Unlock all characters.
Out of stock - Buy all enhancements.
Trivia Master - Reach a Score of 5000 in the Young Justice Trivia.
A Death in the Family - Finish the game.
Legacy - Complete the game on Hard Difficulty.
United We Stand - Complete all missions in co-op mode.
… And Justice for All - Earn all Bronze, Silver, and Gold trophies.