Shrek SuperSlam [PSX]

All characters and levels:
Press L1, R1, Square, Circle at the title screen.

All medals and trophies:
Press R1, L1, Triangle, Square at the title screen.

All story mode chapters:
Press Triangle, Square, R1, Circle at the title screen.

All challenges:
Press Triangle(3), Circle(3), Triangle, Square, Circle, Square(3), Up, Down, Left, Right, L1, R1 at the title screen.

Super Speed power-up:
Press L1(2), R1(2), L1, R1, L1, R1, Square, Circle, Triangle(2) at the title screen.

Pizza One:
Press Up(2), Triangle(2), Right(2), Circle(2), Down(2), L1, R1, Left(2), Square(2), L1, R1 at the title screen.

Pizza Two:
Press Circle(2), Square(2), Right(2), Left(2), L1(2) at the title screen.

Pizza Three:
Press Down(2), Right, Circle, Up, Triangle, Left, Square, L1(2) at the title screen.

Slammageddon:
Press Up(2), Down(2), Left, Right, Left, Right, Triangle, Square(2), L1, R1 at the title screen.

Play as Anthrax:
Complete Bonus 7 in Mega Challenge mode.

Play as Captain Hook:
Complete Tournament 25 in Mega Challenge mode.

Play as Cyclops:
Complete Challenges 36, 37, 38, 39, and 40 in Mega Challenge mode.

Play as Donkey:
Complete Tournament 7 in Mega Challenge mode.

Play as G-nome:
Complete Challenges 11, 12, 13, 14, and 15 in Mega Challenge mode.

Play as Huff N' Puff Wolf:
Complete Tournament 20 in Mega Challenge mode.

Play as Humpty Dumpty:
Complete Bonus 4 in Mega Challenge mode.

Play as Luna:
Complete Challenges 26, 27, 28, 29, and 30 in Mega Challenge mode.

Play as Quasimodo:
Complete Tournament 3 in Mega Challenge mode.

Play as Robin Hood:
Complete Tournament 13 in Mega Challenge mode.