Timeline in minutes for the Files Locations Guide: The Files are listed in the step-by-step video, in the order that they appear chronologically. Where to find all Files in Resident Evil 0 HD Remaster? The in-game collectibles locations for the Files are described in this detailed video guide. They are called Player Manual 1 and Court Order For Transportation. Note: There are 2 Files by default in your inventory at the beginning of the game, so they are unmissable.
After you fight Proto Tyrant the first time, you get access to the elevator which has 4 floors, the 1st one takes you back to the train wreck, from there you can go back to the facility! But there might be more enemies in certain areas.
That said, there might be a difficult way to get back to the train if you’re already at the end of the game. Notably the files are in the train area, because you cannot get back here later. But there are a few files that are missable. Tip: Most of the files you will get automatically by playing through the game.