Cheat Mode
At the level selection screen, hold down both the left and right shoulder buttons. You will get a screen with CODES top-right and space for upto eight characters. Use UP/DOWN to cycle the letters (A-Z, 0-9) and LEFT/RIGHT to select which letter. Press X when done.

Password – Effect:

INVINC0 – Turn invincibility off
INVINC1 – Turn invincibility on
LVLANY0 – Turn of any-level selection
LVLANY1 – All any level to be selected