All weapons
Platform: PSP
While holding L and R press up, up, down, down, left, right, left, right, X, O
More Scythe Moves
Platform: PSP
Once you collect four Weapon Widgets, pay Smith and Weston to unlock "More Scythe Moves". Then, use the following combinations:
Circle Spin: SQUARE, SQUARE, TRIANGLE
Dive Attack: X, X, SQUARE
Powerful Combo Hit: SQUARE, SQUARE, SQUARE
Uppercut: SQUARE, SQUARE, X
Cheat List
Platform: PSP
Pause the game while playing and hold the PSP's L and R buttons and enter the associated key sequence.
All weapons:
Platform: PSP
UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, X, CIRCLE
Invincibility:
Platform: PSP
UP, UP, DOWN, DOWN, LEFT, LEFT, RIGHT, RIGHT, SQUARE, TRIANGLE
All Upgrades:
Platform: PSP
DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, X, CIRCLE
Porable Ammo Dump:
Platform: PSP
TRIANGLE, TRIANGLE, X, X, SQUARE, CIRCLE, SQUARE, CIRCLE, DOWN, RIGHT
Death Jr Codes
Platform: PSP
While the game is paused, hold L and R and enter the following:
Warp to Final Battle stage:
Platform: PSP
Down, X, Down, X, Down, X, Down, Triangle, Up, X
Warp to The Basement
Platform: PSP
Down, X, Down, X, Down, X, Down, X, Up, Triangle
Warp to The Museum
Platform: PSP
Up, X, Down X, Down, X, Down, X Down, X
Warp to Basic Training stage
Platform: PSP
Up, Triangle, Up, X, Down, X, Down, X, Down, X
Warp to Advanced Training stage
Platform: PSP
Down, X, Down, X, Down, X, Down, X, Down, Square
Warp to Seep's Hood stage
Platform: PSP
Down, Triangle, Down, X, Down, X, Down, X, Down, X
Warp to The Corner Store stage
Platform: PSP
Down, X, Up, X, Down, X, Down, X, Down, X
Warp to My House stage
Platform: PSP
Down, X, Down, Triangle, Down, X, Down, X, Down, X
Warp to Udder Madness stage
Platform: PSP
Down, X, Down, X, Up, X, Down, X, Down, X
Warp to How a Cow Becomes a Steak stage
Platform: PSP
Down, X, Down, X, Down, Triangle, Down, X, Down, X
Warp to The Burger Tram stage
Platform: PSP
Down, X, Down, X, Down, X, Up, X, Down, X
Warp to Higher Learning stage
Platform: PSP
Down, X, Down, X, Down, X, Down, Triangle, Down, X
Warp to Growth Spurt stage
Platform: PSP
Down, X, Down, X, Down, X, Down, X, Up, X
Warp to Bottom of the Bell Curve stage
Platform: PSP
Down, X, Down, X, Down, X, Down, X, Down, Triangle
Warp to Big Trouble in Little Downtown stage
Platform: PSP
Up, Triangle, Down, X, Down, X, Down, X, Down, X
Warp to Moving on Up stage
Platform: PSP
Down, Triangle, Up, X, Down, X, Down, X, Down, X
Warp to Burn it Down stage
Platform: PSP
Down, X, Up, Triangle, Down, X, Down, X, Down, X
Warp to Happy Trails Insanitarium stage
Platform: PSP
Down, X, Down, Triangle, Up, X, Down, X, Down, X
Warp to Inner Madness Stage
Platform: PSP
Down, X, Down, X, Up, Triangle, Down, X, Down, X
Warp to Shock Treatment stage
Platform: PSP
Down, X, Down, X, Down, Triangle, Up, X, Down, X
Warp to Into the Box stage
Platform: PSP
Down, X, Down, X, Down, X, Up, Triangle, Down, X