Use these combinations to unlock the corresponding effect:
Pick mission: at the mission select screen click Left Analog Stick, Black, R, Right Analog Stick, White, L
Finish current mission: while the gameplay click Left Analog Stick, White, White, Black, click Right Analog Stick, White
Change music: at the Front End press Left Analog stick, click Left Analog stick, Right Analog stick, Right Analog stick, L, R