+Obtain Sigma blade, fight Cutman, play as Alia and Layer
At the title screen where it says "press start", enter the codes then, start a new game on normal or hard and the blade and the 2 characters will be available at the development shop for purchase.
To fight Cutman, go to the end of Optic Sunflowers stage.
Code Effect
Left, Circle, Up, Triangle, Down, X, Right, Square, L1, R1, L2, R2 -Fight Cutman
Down, R1, Up, L1, Square, X, Triangle, Circle -Play as Alia
Square, Square, Right, X, R1 -Play as Layer
L3, L3, R3, L3, L3, R3, L3, L3, R3, L3, L3, R3 -Sigma Blade
+Play as Pallete, Ultimate Armor X, Black Zero, and White Axl
At the Title Screen where it says "press start", type the following codes in:Code Effect
L1, L1, R1, R1, L1, L1, L1, L1 -Unlock Black Zero
L2, L2, L2, R2, R2, R2, L2, L2, L2, R2 -Unlock White Axl
R1, X, Left, Square, Square -Unlocks Pallete
+Ultimate X Armor
Enter Code at the title screen.Code Effect
Left(3), Right(3), Left(4), Right(4) -Unlock Ultimate X Armor
+Unlock Armor
Unlockable How to Unlock
Axl's White Armor Beat the game and have 100% of Axl's metals puchased and defeat the final boss using Axl with a double attack.
X's Ultimate Armor Beat the game and have 100% of X's metals puchased, as well as all 8 armor pieces.
Zero's Black Armor Beat the game and have 100% of Zero's metals puchased.
+Unlock Zero's Sigma-Blade
Simply complete the game and then load your clear file. The Sigma-Blade will now be available for purchase in the R&D Lab.