I apologize in advance if I don't give all the answers here, and maybe it won't be accurate, but I will give you some answers:
- on the second floor in 0.1.3.5 there could be an elevator, which you passed there in the old pizzalab and it allowed you to return back and continue
- regarding parking and the warehouse, unfortunately, it hasn't changed that much, only some places are passages, regarding the ventilation, it's probably so you don't suffer in the parkour in the warehouse,
- regarding the large door in security, the author just hasn't finished there yet, that's why the continuation is being written
- unfortunately no, I read on Discord, Patreon, and Itch if there is a way to find hands for Mandy, and as they wrote there, not yet, because there are no hands for Mandy yet
- regarding the girls and other things I don't know, maybe it's an oversight or a bug, but maybe they haven't finished them yet, and they should be in the new version, about the 2-3 rooms of the train station, that also surprised me, although I myself haven't gone through it, but I saw one youtuber how he went through it, regarding the console you probably all went through it, but the author himself likes to hide some things for us to find, but I'm not sure.