Hey, this is my take on it.
I can understand the first and last lines, but the middle line perplexes me. "Chill at my heel" obviously refers to an unexpected change, with a hint of anxiety. This change then shatters his unrealistic imagining of things to come ("utopian fiction"). But what is your interpretation of "pseudo world premiere" in the context of the lyrics?
The "chill at my heel" I think represents reality. And "pseudo world premiere" is a fake or sham world premiere he imagines of having. So the harsh reality (the chill) breaks apart his utopian fiction of a grand world premiere, it turns out to be an unrealistic sham, an empty day dream.
Edit: I took another look at this one and, well... It almost seems like there's a verb missing in the line "That makes the protections I've built around my pseudo world premiere": the chill makes the protections to do... what? But it if means that the chill keeps the protections intact, it gets very complicated. It means the chill is doing 2 opposite things at once. Maintaining the sham world premiere and at the same time tearing apart on that utopian fiction. No wonder his thoughts are delirious (confused) later.
"...Crashing against my delirious thoughts where humanity's waiting alone." This one seems like it should be more straightforward, but I'm just unsure about what he's implying when he says "where humanity's waiting alone." So this unexpected change shatters his delusional vision, but why is humanity there alone?
I think it means that in his head, where the delirious thoughts are crashing, humanity is the only thing that's left, it doesn't have any other company.
Hope this helps somehow, but someone else might not see it the same way.