After the dials have been successfully locked in, four electrical fuseboxes will begin sparking different elemental colors (Fire, Acid, Water and Electricity). You must kill an Elemental Catalyst Zombie of the same element near its matching fusebox. For example, kill the Fire Catalyst next to the red sparking fusebox. When you kill the right Elemental Catalyst Zombie next to its matching outlet, a ritual symbol will spawn on the ground where the Catalyst was killed. Don't go standing or interacting with it yet!
The four outlets can be found at any of the following locations:
-
The first State Room on the left, next to a painting on the ground
-
In the 3th Class Bert Staircase, next to a suitcase on the ground
-
In the Dinning Hall
-
At the top of the grand staircase (look well, it can be dark here)
-
At the Aft Decks, look through a barricade next to a fallen chair
- On the left pillar of the Zeus statue
When a ritual symbol has appeared, every player must stand on it and interact with it, causing you to get teleported into a trial, where you must defeat every incoming zombie. Your screen will turn grey once you have successfully completed the trial and you will then be able to pick up a fake Sentinel Artifact. This must be done for all four different outlets. It’s important to note, however, that this particular part of the Easter Egg must be completed in the following order: Acid > Water > Electric > Fire
Once all four are completed, you’ll be able to pick up the Real Sentinel Artifact. Yay!