Earthworm Jim 2

Manta shield:
Hold A + B + Up for two seconds of protection.

Map mode:
Pause game play and press A, C(2), B, A(2), B, Up.
Use the D-pad to move through the current level.
Press A to resume game play at any point in the level.

Level select:
Pause game play and press A, B, C, A, B, A, C, Left.

Bright pause screen:
Pause game play and press A(4), B(4).

Configuration menu:
Pause game play and press A, C(2), A, B, A, B, Left.

Debug mode:
Pause game play and press A, B, C(2), B, A, B(2).

Extra life:
Pause game play and press A, B, C(3), A(2), B.

One time extra life:
Pause game play and press A, B, C(3), A(3).

Energy refill:
Pause game play and press A, B, C, A, B, C, A(2).

One time energy refill:
Pause game play and press A, B, C, A, B, C, A, B.

Ammunition refill:
Pause game play and press C, B(2), A, C, B, A(2).

One time ammunition refill:
Pause game play and press C, B(2), A, C, B(2), A.

Money worm:
Pause game play and press C, A, B, A, B, A, C, A.

One time money worm:
Pause game play and press C, A, C, A, C, A, C, A.

Continue:
Pause game play and press A(2), C(2), B, A, Left, Right.

One time continue:
Pause game play and press A(2), C(2), B, A, Left(2).

Invulnerability toggle:
Pause game play and press A(4), Left, Right(2), Left.

Level codes:
Pause game play and enter one of the following controller actions to jump to the corresponding level.

Level           Code
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Puppies One     Press C(6), A(2).
Puppies Two     Press Left, Right, B, C(2), Left, Right, A.
Puppies Three   Press Right(2), A, B, C, Left, Right, A.
Peter Pan       Press C, B, C, Left, Right, Left, A, B.
Abduction       Press Down, A, C, Left, Right, Down, A, C.
Inflated Head   Press B(2), C, A, B, C, Left, Right.
Sally           Press A, B, C(2), Up, C, Left, Right.
Soil            Press A(2), C(2), B(2), A(2).
Meat            Press C(2), Down(2), A, Right(2), Left.
ISO             Press A, B, C, Right(5).
Run Jim Run     Press B(2), C, Left(4), Right.
Unzip           Press C, A, C, A, B, A(2), Up.
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Weapon codes:
Pause game play and enter one of the following controller actions to obtain the corresponding weapon.

Weapon                Code
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Plasma Gun            Press C(4), A(3), B.
3 Shot Gun            Press C(4), A(3), C.
Homing Gun            Press C(4), A(2), B, A.
Bubble Gun            Press C(4), A(2), B(2).
Nuke Gun              Press C(4), A(2), B, C.
Teleport Mucus Bomb   Press C, A, B, C, A, B, Up, Down.
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Hint: No cows:
Warp to the level where Jim is a Blind Cave Salamander.
Then warp to the ending sequence.
If done correctly there should not be cows inside the Princess, Psy-crow, or Earthworm Jim.