Unlocking bonus episodes only depends on your rank. There is a total of 3 unlockable bonus episodes. Once you unlock them on one difficult setting, the are open to all others.
Unlockable How to Unlock Bonus Episode 1 - Cher - Believe Advance to 4th Rank - Captain of Soul Bonus Episode 2 - Jackson 5 - ABC Advance to 6th Rank - King of the Beat Bonus Episode 3 - Destiny's Child - Survivor Advance to 9th Rank - Legendary Agent
Contributed By: firefdr.
Unlockable How to Unlock Commander Kahn Finish every song in the game in every mode (Breesin, Crusin, Sweatin, Hard Rock!)
Contributed By: End_Of_Heart.
After beating the last song on "Hard ROCK!" difficulty, you'll unlock the Elite Beat Agents Credits to be viewed at any time. It can be viewed in the bottom right corner of the Gallery.
Unlockable How to Unlock Credits Beat 'Jumpin Jack Flash' on 'Hard ROCK!'
Contributed By: __Mars__.
Mr. X (Multiplayer Only)
After reaching Hard ROCK! mode, "Mr. X" will become a playable character in both single-card and multi-card Vs. mode. He appears in Commander Kahn's space, and is basically Kahn himself with a giant cat head. Mr. X disappears once Kahn is unlocked and is replaced with him.
Unlockable How to Unlock Mr. X Unlock Hard ROCK! mode, but don't unlock Commander Kahn.
Contributed By: KirbyKollector.
In the game there already is 2 game modes, 2 more are there for you to unlock.
Unlockable How to Unlock Hard ROCK! Mode Clear Sweatin' Sweatin' Mode Clear Crusin'
Contributed By: u8myrice.
When you get the highest rank, there will be an extra congraulatory picture. It can also be viewed again in the gallery on the bottom right corner.
Contributed By: dishyeh0.
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