Disgaea 3: Absence of Detention

This is for beating the Tyrant Baal. You’ll unlock this fight for completing the following:

• Raspberyl Questline
• Majin Academy Question
• All Extra Maps
• Diez Gentlemen Question
• Additional Character Recruitments
• Item World Command Attack, Class World CA, and Survival mode

Doing all of the above lead us towards the real goal of:

Unlocking EVERY character

You'll need to clear IWCA and CWCA in under 150 commands to unlock special characters. Also, there's a character that must be unlocked by completing certain actions in Survival mode. While in Survival mode, you'll start to come across Level Spheres. You'll have to get 7 of these. If you're flying through Survival Mode, an easy way to capture a Level Sphere is to run a character over to it, have them pick it up, and then have another character exit the level through the portal...or kill all enemies. If you're holding the sphere when you finish the level, you should get rewarded for it.

Once you have 7 level spheres, you'll unlock a special Mystery Room. In here, a green dragon will grant you a wish. Choose the option for "I want a mascot girl" and you'll unlock a new character.