I'm having a great time with this game. The gameplay loop is fun and the inventory management can be challenging. However, I do have one mechanic that I really don't enjoy. If you spend too long on a level or remove a book from a pedestal an invincible guardian appears. You can evade it, but if you get locked in a room or a boss battle with it you better just teleport out it's pretty much an insta-kill hit. Nowhere I have found indicates that this exists or what triggers it. I had to go to Reddit to find out. For a game that really pushes the inventory mechanic its a bit of a kick in the teeth to then be punished for it.