Third ending

[riannon]

First of all sorry if there a similiar post before. Here we go, i knew totem tribe had three possible ending, but i play it for the fifth time and only got two ending, the evil one and the one where use the purified tear of heaven. But i still can't figure out the third ending,

[Cyberomega]

Beat the game without sacrificing your ppl and without doing the Guardian Moon is the third ending.

[Beast]

Beat the game without sacrificing your ppl and without doing the Guardian Moon is the third ending.

Sacrificing your people?