Refill Energy: 
Pause game play and press Up, Up, Down, Down, Square, Circle, Square, Circle, L1, R1 on
controller two. 

Rocket Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, Up on controller two. 

Padapada Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, Down on controller two. 

Fuwafuwa Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, Circle on controller two. 
Jumping Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, Triangle on controller two. 
Ice Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, Square on controller two. 

Marine Potato: 
Pause game play and press R1, L2, R2, L1, Left, Right, X on controller two. 

Unlock All Levels: 
Hold Circle + X + Triangle + Square + L1 + L2 + R1 + R2 on controller two and press
Down, Down, Right at the level selection screen. 

99 Lives: 
While at the level selection screen hold L2 + R2 on controller two and press Up, Down, Left,
Right. Then hold L1 + R1 on controller two, and press Right, Left, Down. Finally, release L1
and R1, then press Up. 

All damage takes 1 point: 
Hold L1 + R1 on controller two and press Triangle, X, Square, Circle at the level selection
screen. Then, hold L2 + R2 on controller two and press Circle, Square, X. Finally, release L2
and R2, then press Triangle. 
Invincibility in caves: 
While at the level selection screen press R2[2x], L2[3x], R1[7x], L2[3x], R2[3x], R1[7x] on
controller two.