I think it's difficult to decipher who is evil or good. This game obviously has a strong influence of "Ying Yang" dualism

What if though we go through all that effort to destroy the light and bring back darkness to the first only to learn that it was a ruse by Solus and the Ascians to destroy another one of Hydaelyn's shards. We as warriors of darkness are trying to bring back balance, and i highly doubt that is what Solus also wants. Therefore he wouldn't be trying to help us by dropping clues if he wasn't playing us in same way