Disgaea DS Cheats

Etna Mode (JP)
At Title Menu, put your cursor on New Game (Top Choice). Then press:

X - Y - B - X - Y - B - A

You should hear Etna's voice before it starts up.

Unlockable Etna Mode via New Game +
You opt to do Etna Mode using New Game + feature! When you proceed with Etna Mode using New Game +, enemies will be made stronger in contrast to proceeding by inputting code and it'll also host one of the best levelling spot in the game!

Check out all her entries in her secret chamber before the last chapter and you'll be given the option to do Etna Mode in New Game +.

Pleinar
Simply lose to Mid-boss the first time you meet him. Then on your new clear file, complete the tutorial level and talk to Pleinar. A new option will appear below the usual assembly things. Choose that and she will join at level 1.

Uncovering Etna's Secret Chamber
Unlocking Etna's Chamber: Push the button behind the throne, and another in the skull beside the weapon shop, and check the wall behind the Prinny in the same room as Longinus.

Unlock Prinny Commentary
To unlock the Prinny commentary, start a new game using new game+. The fastest way to get the prinny commentary is to lose to mid-boss to create a new-game+.