At the level selection screen, hold L1 + L2 + L3 + R1 + R2 + R3 + Select + Start to unlock the Robot Form costume without the extreme power-up. If you entered the code correctly, you will hear a sound. Repeat the code to disable its effect.Secret level
In Level 7: Some Kind Of Lab, punch the heavy bag in the glass cell where you start 87 times until a chime sounds. After a few seconds, your head and others will be replaced with Yoshihisa Kishimoto's face.Fuzz Face
Set Fuzz Face free by dodging seven times between the two tombstones next to the ladder in Level 6: Assault Zone. Fuzz Face will now follow you and occasionally drop Dragon Kick and batteries.Dragon mode
Successfully complete the game on the Normal difficulty to unlock the Dragon difficulty.Double Dragon mode
Successfully complete the game on the Dragon difficulty to unlock the Double Dragon difficulty.Concept Art Gallery
Successfully complete the game to unlock the "Concept Art Gallery" option at the main menu.Secret area
After becoming a Ro-Bro in the final level, move to the left until reaching the left side of the screen, then move down. You will descend a hidden ladder and find an area with extra lives and two chests.Trophies
Successfully complete one of the following tasks to get a trophy:
- Metal Head (Bronze): Upgrade a song at the Tapesmith.
- Weapon Master (Bronze): Use every weapon once.
- Gleam On! (Bronze): Dodge and get the Gleam 50 times.
- Mr. Perfect (Bronze): Complete any level without taking damage.
- This Channel Sucks (Bronze): Break all the Skullmageddon monitors in the Rocket Dojo.
- Pick a Winner! (Bronze): Nail all enemies with the hair pick.
- Victory! (Bronze): Defeat Skullmageddon!
- Misters Perfect (Silver): Complete any level in co-op without taking any damage... with friendly fire enabled!
- Double Dragon (Silver): Finish every stage cooperatively on Double Dragon difficulty with friendly fire enabled!
- Max Fidelity (Gold): Max out every song to level 50!!
- Single Dragon (Silver): Finish every stage solo on Double Dragon difficulty!
Additionally, there are two secret trophies:
- FuzzFace!! (Bronze): Befriend everyone's most favoritest helpful character!
- A Foot Face? (Bronze): Become the hidden idol!