Complete the indicated task to unlock the corresponding ending.

Dark Assembly : Force proposals in the Dark Assembly fifty times.
Etna Heroine : Get at least 100 ally kills before Chapter 5, Stage 4, then kill Maderas when prompted.
Flonne Tragedy : Get at least 50 ally kills before Chapter 3, Stage 4, then kill Hoggmeiser when prompted.
Good/Best : Complete the game without any ally kills.
Item God : Kill an Item God or Item God 2.
Midboss : Lose to the mid-Boss of Chapter 1, 4, 6 or 10.
Normal : Have at least one ally kill and do not fulfill the requirements for any other ending.
Overthrowing Earth : Pass the "Human World" proposal at the Dark Assembly, then complete the Human World stages.
Complete the indicated task to unlock the corresponding ending in Etna mode.

Beauty Tyrant Overlord Etna: Pass the proposal for Alternate Netherworld and The Mysterious Seal in the Dark Assembly, then defeat Priere, Marjoly and finally Baal.
Normal: Complete the last chapter in Etna mode.