Story

Returnal's cryptic story is what makes this game so incredibly good. You usually know stories like this from the Souls games, but here they were implemented incredibly.
In addition to the story that you are told during the normal game playthrough, you also need the "secret" ending and collectibles to understand the rest of Selene's story.
However, since this game is randomly generated, it can be quite annoying to get the collectables mentioned. xD