Zapper

Unlimited lives:
Pause game play, then hold L and press Up(3), Left(2), Right, Left, Right.

Unlimited shield:
Pause the game, then hold L and press Up, Down, Up, Left, Right, Down, Up.

Hint: Win the round:
Collect six eggs every round and win the round.
martin osier.

Cheats:
Collect all 400 fireflies in a level to unlock the corresponding cheat.

Level 1: Insect Eye . Changes your vision.
Level 2: Screen Switch. Reverses level.
Level 3. Auto-Hop. Hold D-pad to keep Zapper moving.
Level 4: Infinite Super Zap. Zapper always has a Super Zap.

Control menu screen:
Hold R and rotate the Left Analog-stick and Right Analog-stick to control Zapper's facial expressions.

Hint: Finding secret passages:
Follow your friend's directions for secret passages.
martin osier.

Hint: Flying:
Win the first world with 400 points and you will get to fly.
martin osier.

Hint: Power Dash:
Win the second world with 400 points for the Power Dash move.