Here is the full list of all 50 Cartoon Network: Punch Time Explosion XL achievements worth 1,000 gamerscore.
Won ten fights as Mac and Bloo in their alternate costumes
Scored a knockout using Father’s synergy assist
Scored two consecutive knockouts using Captain Planet’s synergy assist
Scored two consecutive knockouts with Aku’s synergy assist
Scored five knockouts after activating Jack’s PTE
Scored four consecutive knockouts using Kevin’s PTE
Scored four knockouts after using Billy and Mandy’s PTE
Scored three simultaneous knockouts using Captain Planet’s PTE
Scored two simultaneous knockouts using Toiletnator’s PTE
Activated Johnny’s synergy assist
Activated Bubbles’ synergy assist
Activated Scotsman's PTE and Peppermint Larry’s Assist in the same fight
Won ten fights as Monkey in his alternate costume
Unlocked all arenas
Activated Panini’s assist while fighting against Chowder
Activated DeeDee’s assist while fighting against Dexter
Activated Mandark’s assist while fighting against Dexter
Completed Kids Next Door Platformer under 5 minutes
Won five fights as Father with Numbuh One as an opponent
Won ten fights as Him against a Powerpuff girl
Won ten fights as Mojo Jojo against a Powerpuff girl
Won a fight with each Powerpuff in alternate costume against a Powerpuff in normal outfit
Won nine fights as Him in his alternate costume
Won five fights as Aku with Jack as an opponent
Won a fight as Jack in his alternate costume with Flapjack and K’nuckles as opponents
Unlocked all costumes
Won five fights as Vilgax against Ben and Young Ben
Won the Toadblatt’s level in story mode with Grim in under two minutes
Defeated Aku boss using Jack without dying
Defeated Kevin boss using Ben without dying
Won the Bellwood fight in story mode with Ben or Young Ben in under a minute
Won the Endsville Cemetery level in story mode with Hoss Delgado without dying
Won the first Flapjack Pier level in story mode with Flapjack and K’nuckles in under three minutes
Unlocked all characters
Beat Story Mode on the Hard difficulty setting
Beat Story Mode
Defeated the Final boss without dying
Finished the Samurai Jack theme in story mode
Collected 9001 points
Finished the Grim Adventure’s theme in story mode
Activated Ben’s synergy assist
Finished the Dexter’s Lab theme in story mode
Scored two knockouts using Dexter’s PTE
Finished the Foster’s Home theme in story mode
Finished the Powerpuff Girls theme in story mode
Finished the KND theme in story mode
Finished the Flapjack theme in story mode
Collected 1000 points from a single level
Finished the Ben 10 theme in story mode
Finished the Chowder theme in story mode