Earthworm Jim 2
Start a game and pause it. Then press any of the following:
Nine Lives:
Y, A, Right, Down, Down, A, Left, Right
100% Energy:
Left, A, Z, Y, Down, A, Y, Down
Plasma Gun:
C, A, Right, Right, Up, Down, Up, Left
Three-Finger Gun:
Down, A, Up, B, Right, Right, C, Right