This is a trick, that helps to avoid 'Suit Up' level. In the manor, after 'Origins' level, you need to take two riddler's boxes and choose two same pictures (for now optimal-Alfred). After that you can press 'Watch in a batcave', and after the loading screen you are right at the batcomputer in a batcave. It is a level already, not a special room, from that place you can continue your story. This is allowed only in 'Any% w/ Batcave Warp' category since 12/18/2020