Tribal-Life Ending
You lose all the trials (Claire will be a slut at day 5), and on day 6, Chief Pinu gives you a question on which animal you would fend off, the wolf, the crow, or the boar (all options lead to the same outcome, Claire being drunk and mistaking one of the tribesman as her husband, and getting impregnated). John becomes an cuck, allowing Claire (the goddess Ikapati and Claire are now fused together) to do what she wants, and she wants to live in the tribe, to which John agreed.
(11 sex scenes)
And I think that's all of the endings and ways to reach them. If you reached all three endings, the gallery will be complete, and all of the clothes and accessories will be unlocked, allowing you change what the womn will look like (only standing model tho, doesn't affect the sex scenes) and that's all.