Very good!
The only problem i see with this game is discoverability: i thought that it restarted to the beginning once i died, and was about to close when, by chance, clicked on an empty spot and a new option appeared (jump over the crack, i believe it was). If it wasn’t for that, i would have missed the end—died six times, apparently.
This is very clever, and well integrated with the story (i assume that’s what the shaman is referring to when says that i am an “echo”).
But maybe it was just me? I don’t know.