Yeah if you were here for season of the Dawn You would know if you completed a 30-plus decipher puzzle, our guardians death was revealed by some unknown entity actually kills us... https://youtu.be/rSKIt8wLKQQ Maybe the darkness or maybe even Oryx sister kills us we just don't know but the dialogue at our funeral basically tells us we did save the last City but we made the ultimate sacrifice Even in the dialog saint-14 kind of hints that he may travel through time and take our place so we can come back and fight etc that was pretty much a popular theory back then That who knows maybe that was the consequence for bringing him back. That's why you never should f*** with time travel. Especially when you bring somebody back from the dead there is consequence if you think about it in a Sci-Fi standpoint.