Go to 'Options' at the 'Main' menu and select the 'Cheats' option. Then at the 'Unlock Everything' menu enter the case sensitive code 'tol0' (without the quotes). Note: When this code has been activated high scores will become disabled online.
Activate Euphoria for ALL Crossfades and Spikes to become automatic (make sure you have the crossfade in the correct position when Euphoria ends). Euphoria is equivalent to Guitar Hero's Star Power, collected by successfully completing specific phrases in the song mix, called Perfect Regions, and can be released by pressing the Euphoria button, doubling the player's current multiplier.