How do I get the new ending?
With a new game, I found the cage before the alien queen room, but what do I have to do after that? Do I get pregnant?
With a full save, "you have to go to the right of the final map". We agree that the final map corresponds to the last boss. There's a room that can be opened with a level 2 key, but it's empty. Do I have to kill the boss first, because I did it and it automatically triggered the symbiotic ending?