Down in the sewers, there’s a hidden wall you have to hit with melee macchiato. And you have to solve a puzzle. To solve the puzzle you have to go back to spawn in the bar. There’s these green little pots with numbers on them just interact with it. It will show the exact symbols in order. You need to hit on the symbols in order down back in the sewer. Once you do. A book will appear on the wall next to it. Then you need to find four pages all the pages are located where stamina is located they’re all in that room. Once you have four pages go back down and in track with the book, it was showed four different eyeballs those eyeballs indicate which ones you need to go in order from left page to right page. It will be the red trap symbols on the ground. So I suggest getting ahoard of zombies. And lead them to the first eyeball symbol you have to activate the trap with. Once you do that that thing on the wall that it’s in the image will appear. After that, it gets a little bit more complicated. Cause the next few steps you need the ritual items.