voici les fins selon gamefaqs
Bad Ending

Defeat the Item God on the 100th floor of a Legendary item.
Dark Assembly Ending

Use "Persuade by Force" 100 times in the Dark Assembly.
Etna Heroine Ending

Kill 100 or more allies before Episode 5's "Ice Queen" battle and select "Kill Maderas".
Flonne Tragedy Ending

Kill 50 or more allies before Episode 3's "Lavish Hall" battle and select "Kill Hoggmeiser".
Good Ending

Play through the game without killing a single ally. Ally deaths from Geo Panels do not count.
Mid-Boss Ending

Get defeated by Mid-Boss in episode 1, 4, 6, or 10.
Normal Ending

Do not fulfill the conditions for the Good, Bad, or Dark Assembly endings.
Overthrowing Earth Ending

Clear the Human World
Je sais pas trop pourquoi tu n'as pas eu la mauvaise fin (en même temps je pige pas pourquoi battre un item god débloquerait une fin, surtout une mauvaise ??)