Pam seems to know a lot and we only get a glimpse of that...if the second game isn't a direct sequel to bloom & rage story, maybe it could be with her or someone she's acquainted with
I think that the abyss precisely opens every 27 years. When entering the cabin and finding the bible with the mention of Celine, we can see a date : M DC CLII in roman numerals which gives 1752. And when you do 1752+27+27+27 etc... we come to 1995 and then 2022