Nuclear reactor

Now you're locked in. In a nuclear reactor. You've brought this on yourselves. How could you be so foolish. Didn't you see the warning signs? I find that hard to believe. Did you think they were just there for fun? Or that they were no longer valid? I find that hard to believe, too. They look brand new. And how on earth did you decide to climb up that strange fire ladder? And then go through a self-closing door, which clearly states that there's danger behind it? As I said, it wasn't very smart. The fact that you weren't deterred by the darkness surprises me most of all. Can you remember the nuclear disaster in Chernobyl, 1986? Or Fukushima, 2011? Probably, right? And yet, you've just walked in here. Completely incomprehensible. And stupid. But I can assure you, there's no nuclear disaster imminent here. However, you do have a little problem with the breathing air. Why the air is a problem? It's quite simple. It's only going to last for one more hour. So you better make sure to get out of here as soon as possible. First of all, I'd turn on the lights. And then start looking for and finding the clues. Solve the puzzles and tasks and open the door. Like I said, you only have one more hour. Otherwise, it will be too late.