Cheat codes:
     Pause  the  game,  hold  L1  +  L2 + R1 + R2 and press one of the
following codes:

Level skip:
     Circle, Square, X, X.

Level select:
     Triangle, Circle, Square, Square.

Invincibility:
     X, Triangle, Square, Circle.

Infinite ammo:
     Circle, Square, Triangle, X.

Full ammo:
     X, X, Triangle, Triangle.

First special weapon:
     Triangle, X, X, X.

Second special weapon:
     X, X, X, Triangle.

Full health:
     Triangle, Triangle, X, X.

Rocket boots:
     Triangle, Square, Square, Triangle.

Animals dont attack:
     Circle, Square, Square, Circle.

Big feet:
     Triangle,Square, Square, X.

Big guns:
     Triangle, Circle, Circle, Triangle.

Jet pack:
     Square, Square, Triangle, Triangle.

Heavy weapon:
     Triangle, X, Square, Square.

All crates powered-up:
     Circle, X, X, Circle.

Instant shape build:
     Square, Square, Circle, Circle.

Indestructible base:
     X, Triangle, Triangle, X.

Easy gun build:
     Circle, Circle, X, X.

Easy buddy build:
     Circle, Circle, X, Circle.