So we have two hints that Propast may be not quite what it seems:
1. The devs have stated it's supposed to look dream-like (emphasis theirs, not mine)
2. People on the street tell you to "Wake up" or "Stop dreaming"
Combine that with the "mystery towers" spread all around, and I'm thinking something strange is going on here. What if those towers are spreading some kind of hallucinogenic drug that is causing people to see a different version of the city? What if the REAL Propast is actually a hellish, nightmarish place because of the prolonged damage caused by the Dreamers (dreams moving from Stark to Arcadia but not vice versa)?
Anyway, just a thought