Complete each achievement to get the allotted gamerscore. The numbers between the () is the points given for each achievement.
| Achievement | How to unlock |
|---|
| Chowder Fan (10) | Finished the Chowder theme in story mode |
| Ben 10 Fan (10) | Finished the Ben 10 theme in story mode |
| Flapjack Fan (10) | Finished the Flapjack theme in story mode |
| KND Fan (15) | Finished the KND theme in story mode |
| PPG Fan (15) | Finished the Powerpuff Girls theme in story mode |
| Foster's Fan (15) | Finished the Foster’s Home theme in story mode |
| Dexter's Lab Fan (20) | Finished the Dexter’s Lab theme in story mode |
| Billy & Mandy Fan (20) | Finished the Grim Adventure’s theme in story mode |
| Samurai Jack Fan (20) | Finished the Samurai Jack theme in story mode |
| Couch Potato (100) | Beat Story Mode |
| No Big Deal (50) | Beat Story Mode on the Hard difficulty setting |
| Cartoon Collector (50) | Unlocked all characters |
| Costume Collector (30) | Unlocked all costumes |
| Unreal Estate Collector (40) | Unlocked all arenas |
| Big Money! (20) | Collected 1000 points from a single level |
| It's Over 9000! (25) | Collected 9001 points |
| Frenemies (30) | Defeated Kevin boss using Ben without dying |
| Samurai's Journey (35) | Defeated Aku boss using Jack without dying |
| Professional Hero (50) | Defeated the Final boss without dying |
| "Yes!" (5) | Activated Ben’s synergy assist |
| It's Hero Time! (20) | Won the Bellwood fight in story mode with Ben or Young Ben in under a minute |
| Vengeance of Vilgax (5) | Won five fights as Vilgax against Ben and Young Ben |
| Ugly Finish (20) | Scored four consecutive knockouts using Kevin’s PTE |
| Chicken Ball Z (20) | Scored four knockouts after using Billy and Mandy’s PTE |
| Freedom!!! (20) | Won the Toadblatt’s level in story mode with Grim in under two minutes |
| Like a Hoss (30) | Won the Endsville Cemetery level in story mode with Hoss Delgado without dying |
| Adventure! (30) | Won the first Flapjack Pier level in story mode with Flapjack and K’nuckles in under three minutes |
| Dexo Robo 2000 (10) | Scored two knockouts using Dexter’s PTE |
| What Does This Button Do? (5) | Activated DeeDee’s assist while fighting against Dexter |
| AH-ha-ha! AH-ha-HA ha-ha! (5) | Activated Mandark’s assist while fighting against Dexter |
| Dial M for Monkey (15) | Won ten fights as Monkey in his alternate costume |
| Way of the Samurai (25) | Scored five knockouts after activating Jack’s PTE |
| Ninjas Beat Pirates (10) | Won a fight as Jack in his alternate costume with Flapjack and K’nuckles as opponents |
| Master of Darkness (10) | Won five fights as Aku with Jack as an opponent |
| Viking God of Rock (15) | Scored two consecutive knockouts with Aku’s synergy assist |
| Meet My Beautiful Wife (15) | Activated Scotsman's PTE and Peppermint Larry’s Assist in the same fight |
| Go Mac Go (15) | Won ten fights as Mac and Bloo in their alternate costumes |
| S.E.C.T.O.R. V. (20) | Completed Kids Next Door Platformer under 5 minutes |
| Father is Number One (10) | Won five fights as Father with Numbuh One as an opponent |
| Flame Broiled (10) | Scored a knockout using Father’s synergy assist |
| Flushed (15) | Scored two simultaneous knockouts using Toiletnator’s PTE |
| A Great Big Hug (5) | Activated Bubbles’ synergy assist |
| Not Powerpuff, Rowdyruff! (20) | Won a fight with each Powerpuff in alternate costume against a Powerpuff in normal outfit |
| Planet of the Ape (15) | Won ten fights as Mojo Jojo against a Powerpuff girl |
| Him Diddle Riddle (15) | Won ten fights as Him against a Powerpuff girl |
| P90 Him (15) | Won nine fights as Him in his alternate costume |
| The Power is Yours! (15) | Scored three simultaneous knockouts using Captain Planet’s PTE |
| Disco Fever (10) | Scored two consecutive knockouts using Captain Planet’s synergy assist |
| Do the Monkey (5) | Activated Johnny’s synergy assist |
| I Am Not Your Boyfriend (5) | Activated Panini’s assist while fighting against Chowder |
| Secret Achievements | - |
