It took me a while to figure out how to beat it. I was a bit surprised when removing all the polution didn't work and started panicking when running negative emissions also didn't work. I got there in the end, though. I think I had three victory conditions under construction at the time? Hard to say, since I haven't found them all yet. Overall, great game. Obtuse and stressful at times, but I suspect that was kinda the point.