N20

All of these are in the "Enter Codes"...

Bonus Level Access - Square, Square, Square, Triangle, Circle, Triangle, Square, Square.
Disable All Cheats - Square, Square, Cross, Circle, Circle, Circle, Circle, Triangle.
Full Level Access - Square, Triangle, Circle, Triangle, Cross, Triangle, Square, Cross.
Infinite Firewalls - Cross, Cross, Square, Cross, Cross, Cross, Triangle, Triangle.
Infinite Lives - Circle, Cross, Cross, Triangle, Square, Triangle, Square, Circle.
Infinite Weapons - Square, Cross, Circle, Square, Cross, Square, Circle, Square.
No Bonus Reset On Death - Square, Triangle, Cross, Triangle, Circle, Square, Triangle, Cross.
Underwater Mode - Circle, Cross, Square, Triangle, Triangle, CIrcle, Triangle, Circle.
Unlock All Levels - Square, Circle, Cross, Triangle, Triangle, Cross, Circle, Cross.
Unlock Speedcore - Cross, Cross, Cross, Square, Triangle, Circle, Cross, Triangle.