To unlock the Land of Carnage (a mirror world of every level with super difficult enemies), collect all 16 treasure maps from the different pirates in the Item World.
On the start up menu, place your cursor on "New Game" (First option) and input the following buttons:
Triangle, Square, X, Triangle Square, X, Circle.
Axel/Akutare mode will be unlocked.
At the start screen, put the cursor over "New Game" and press the triangle, square, and circle buttons twice in that order, then X. You can now play in an Axel Mode that has enemies at reduced levels compaired to if you beat the game and went to Axel Mode. Axel Mode offers several new gameplay features exclusive to the PSP port that carry over to the normal mode when beaten.
Throw characters through No Entry panels or tall terrain
Description
As long as the obstacle is only one square thick, you can throw through it. Stand next to it and lift a character, then extend your throw through the obstacle. Retract your throw range (toward the thrower) and press X at the same time. There is a "sweet spot" to do it right, but because there is no penalty to missing it (you just get an error sound) you can keep extending and retracting while mashing X until you throw straight through the obstacle.
You can have infinite turns for Magichange for any character by throwing them back in the base panel. This will work even if the character has already attacked.
Disgaea 2: Dark Hero Days UNLOCKABLES
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