Get Full Pause Screen
Simply press X + Y after pausing the game.
Select a Character
To select who you want to be, beat the game 20 times and enter Left, Right, Up, Up, X, B, L, Y, A in 3 seconds.
Invincibility
Pause gameplay and quickly press Down, Left, Up, Right, L, A, X, Left, R, B, Y, Up, L, A, Down.
All Weapons
Pause gameplay and quickly press Up, Right, Left, Down, B, L, R, A, Right, X, B, Left, R, Y, Up.
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