After reading many a Grimoire cards ive come to the conclusion the traveler may not be as "good" as we think it is. If you think about it we "guardians" are an almost unstoppable force created and givin power by the traveler. It says that the darkness is caused from being an exact opposite of the traveler and only exists to destroy the traveler. Does the darkness have "guardian" soldiers of its own. if the traveler was gone wouldnt the darkness be gone too? Why woudnt the traveler lead the darkness somewhere far far away? Maybe the other aliens that are attacking earth are trying to destroy the traveler so the darkness will leave everyone alone. Later in the story will we have a choice to stay and fight for the traveler or givin the option to go into the darkness? Edit: the dead orbit guy says "earth is not our home friend, it never was!" Did we destroy humanity on earth in order to save our own necks. If earth isnt home.....where is?