Chapter 4 secret level
Collect 90% golden spatulas to unlock a secret level for Chapter 4.

Chapter 5 secret level
Collect 100% of the golden spatulas to unlock a secret level for Chapter 5.

Chapter 1 secret level
Collect 60% golden spatulas.

Chapter 2 secret level
Collect 70% golden spatulas to unlock a secret level for Chapter 2.

Chapter 3 secret level
Collect 80% golden spatulas to unlock a secret level for Chapter 3.

Kill Gary
Go to Chapter 2 Level 1 (Cavernous Canyon) and get to the part where you have to knock down the rocks to cross the path so Gary can get his food. Do not knock down the rocks. Instead, knock down the wall where Gary is behind. Make sure he falls on the spikes. If done correctly, Gary will fall off the screen similar to when Sponge Bob dies. Note: If Gary dies, you will also die.

Defeating the Mother Jellyfish
Catch a few jellyfish, stand on top on the mailbox, and press [Square]. Continue doing this until the Mother Jellyfish is dead.

Defeating the Mother Jellyfish
First, catch five jellyfish. Jump on the first mailbox you see then jump from there onto the shell lamp post. Keep jumping from lamp post to lamp post, throwing jelly fish at her. Go back behind the first mailbox to catch more jellyfish. She cannot hit you if you are behind the mailbox.