Pause the game, hold L, and press Right, X, X, Y, X.

Alternative Fade

Pause the game, hold L, and press Right, Up, Up, Down, X.

Alternative Lighting

Pause the game, hold L, and press Up, Right, Up, Down, X.

Beagle Holes, Footprints, and Burns

Pause the game, hold L, and press Down, Up, X, Y, X.

Fish Eye Camera

Pause the game, hold L, and press Left, Up, Right, Down, X.

Invisible Mode

Pause the game, hold L, and press Up, Left, Right, Up, X.

Slow-Motion Mode

Pause the game, hold L, and press Left, Down, Up, Right, X.