Endings

FMP: Corruption has 3 standard endings, and one secret one added with the DLC; Undending Darkness.

Purification
This is the ending achieved for defeating Ultra Lightmaster. In this ending, he wipes all life off the face of the world, including the player.

Contamination
This is the ending achieved for defeating Neo Damnation. In this ending, he corrupts all life on earth, plunging it into chaos.

Corruption
This is the ending achieved for defeating Corruption. After landing the final blow on him, you look down and see that your hands are jet black and shadowy. When you look back up, you see that Corruption has been replaced by you, and you’re standing where he was. Corruption has possessed you, and killed off the extra vessel. This is the canon ending.

From Within
This is a secret ending achieved when defeating Limbo. Upon being struck down, he explodes into a dark void. The void absorbs the Shade out of you, returning you to your human form. Suddenly, the void erupts into an earth shattering explosion, knocking you unconscious. When you awake, Termina is returned to normal, and the Shade has been wiped off then face of the universe. This ending marks not only the finale of FMP: Corruption, but the end of the FMP Tetralogy as a whole.