PSP
unlimited ammo
Entry location:
Pause menu
Press the following:
Triangle, triangle, X, X, down, right
Submitted By king
PSP
Weapons have Different Names
Pause game play, then hold L + R and press Down, Down, Up, Up, Left, Right, Left, Right, Square, Triangle
PSP
Big Head Mode
Entry location:
pause menu
Pause the game, hold L+R and press triangle, square, X, O, triangle, up, left, down, right, up.
Submitted By reid
PSP
Invincibility
Pause game play, then hold L + R and press Up(2), Down(2), Left(2), Right(2), Square, Triangle. When you exit the start menu, "Can't touch this" will appear to confirm correct code entry.
Submitted By Jake Adler
PSP
Refill Ammo
Pause game play, then hold L + R and press Triangle(2), X(2), Square, Circle, Square, Circle, Down, Right.
note: this code has also been reported as:
Pause game play, then hold L + R and press Triangle(2), X(2), Square, Circle, Square, Circle, Right, Down.
Submitted By Jake Adler
PSP
All Weapons Upgraded
Pause the game, then hold L + R and press Up(2), Down(2), Left, Right, Left, Right, X, Circle. You will hear a slashing sound when entered correctly, and when you unpause a message will say "All Weapons Upgraded."
Submitted By matt russell
PSP
Level Select
Entry location:
during gameplay
Pause the game, then hold L and R and press Up 4 times, Down 4 times, and X 2 times.
Submitted By Alex
PSP
Giant Blade (Big Scythe)
Entry location:
Pause game
Pause the game, hold L and R, and press:
triangle, square, X, circle, triangle, up, left, down, right, up.
And vwala! Now you have a scythe bigger than your old, sucky one.
Submitted By CRAZY GOLD HUSKY
PSP
Last Battlefield Stage
Entry location:
Pause game
Pause the game, hold down L+R and enter the code:
down, X, down, X, down, X, down, triangle, up, X
Submitted By DONOVAN
PSP
A Little More Help (Assist Extender)
Entry location:
Pause game
Hold L+R and press up, up, down, down, triangle, triangle, x, x, triangle, triangle.
Submitted By Angel Romero
PSP
Free Seep
Entry location:
Pause game
Hold L+R and press left, left, right, right, left, right, left, right, x, x.
Submitted By Angel Romero