Thanks for checking it out ,especially considering you beat it 4 times!
Unfortunately there's only a single ending in the current build, with a slight dialogue change after the first ending to hint to the player that it's a 'time-loop', and an extra dialogue option after 3-4 loops that allows you to skip the intro discussion with the elders.
I was planning on expanding the game with more optional endings but decided to move on to other projects for now. I can't say if I'll come back to ATROPOS but it's not out of the question.