The developer often writes long, insightful devlogs on itch.io or Patreon that discuss the philosophy of their "World of Darkness" inspired setting, focusing on the protagonist's transition from a pawn to a player in vampire politics.
The "essay" you might be referring to could be one of the following: The Bite: Revenant v0.41
Version 0.41 expanded on "Lore Items" and quests like "Lessons in Spirituality" , which provide philosophical backstories for the vampire clans and their decadent society. The developer often writes long, insightful devlogs on itch