Totally seconding Gern's questions! Also, why were Collector structures all smashed together metal junk? And how did the crystals / souls contraption at the top of the tower work? What about souls was its sorting based on? Were the crystals basically a holding cell for the tastiest souls so he didn't have to absorb them all at once and get babyfied?
I can imagine maybe you don't actually have all the answers, not necessary and still an awesome adventure, but I and my friends are super keen on hearing any texture you're willing to add!